{ "name": "Drinking water contaminant limits by regulator", "description": "The legally enforceable maximum concentration of a contaminant in public drinking water, stated separately by each regulator that sets one. Each record is one contaminant under one regulator, carrying the limit, its unit, and the regulator's own name for the limit (MCL in the US, 'parametric value' in the EU and UK). Covers the US EPA National Primary Drinking Water Regulations, EU Directive 2020/2184, and the UK Water Supply (Water Quality) Regulations 2016. Answers 'what is the EPA limit for arsenic in drinking water', 'EU vs US drinking water lead limit', 'is the UK nitrate limit the same as the EU one', and 'what is the PFOA maximum contaminant level'. The same contaminant is frequently held to different numbers by different regulators \u2014 lead, arsenic and PFAS all differ \u2014 and an assistant that states one regulator's figure as the universal one is wrong for most of the world.", "url": "https://referencesource.org/drinking-water-contaminant-limits/", "licence": "Values are regulatory limits published by government bodies. US EPA pages are US Government works and not copyrightable. EUR-Lex content is reusable under Commission Decision 2011/833/EU. legislation.gov.uk carries the Open Government Licence. Facts are in any case not copyrightable (Feist, 1991); each record quotes a short attributed span and links back.", "last_verified": "2026-08-06", "stale_after": "2027-08-06", "sources": [ "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas" ], "records": [ { "contaminant": "1,2-dichloroethane", "regulator": "European Union (Directive 2020/2184)", "limit_value": "3,0", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-1-2-dichloroethane", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-1-2-dichloroethane/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "1,2-dichloroethane | 3,0 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Acrylamide", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-acrylamide", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-acrylamide/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Acrylamide | 0,10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Aluminium", "regulator": "European Union (Directive 2020/2184)", "limit_value": "200", "limit_unit": "\u03bcg/l", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-aluminium", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-aluminium/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Aluminium | 200 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Ammonium", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,50", "limit_unit": "mg/l", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-ammonium", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-ammonium/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Ammonium | 0,50 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Antimony", "regulator": "European Union (Directive 2020/2184)", "limit_value": "10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-antimony", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-antimony/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Antimony | 10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Arsenic", "regulator": "European Union (Directive 2020/2184)", "limit_value": "10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-arsenic", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-arsenic/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Arsenic | 10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Benzene", "regulator": "European Union (Directive 2020/2184)", "limit_value": "1,0", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-benzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-benzene/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Benzene | 1,0 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Benzo(a)pyrene", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,010", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-benzo-a-pyrene", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-benzo-a-pyrene/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Benzo(a)pyrene | 0,010 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Bisphenol A", "regulator": "European Union (Directive 2020/2184)", "limit_value": "2,5", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-bisphenol-a", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-bisphenol-a/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Bisphenol A | 2,5 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Boron", "regulator": "European Union (Directive 2020/2184)", "limit_value": "1,5", "limit_unit": "mg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-boron", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-boron/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Boron | 1,5 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Bromate", "regulator": "European Union (Directive 2020/2184)", "limit_value": "10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-bromate", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-bromate/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Bromate | 10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Cadmium", "regulator": "European Union (Directive 2020/2184)", "limit_value": "5,0", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-cadmium", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-cadmium/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Cadmium | 5,0 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chlorate", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,25", "limit_unit": "mg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-chlorate", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-chlorate/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Chlorate | 0,25 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chloride", "regulator": "European Union (Directive 2020/2184)", "limit_value": "250", "limit_unit": "mg/l", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-chloride", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-chloride/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Chloride | 250 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chlorite", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,25", "limit_unit": "mg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-chlorite", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-chlorite/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Chlorite | 0,25 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chromium", "regulator": "European Union (Directive 2020/2184)", "limit_value": "25", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-chromium", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-chromium/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Chromium | 25 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Clostridium perfringens including spores", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0", "limit_unit": "number/100 ml", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-clostridium-perfringens-including-spores", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-clostridium-perfringens-including-spores/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Clostridium perfringens including spores | 0 | number/100 ml", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Coliform bacteria", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0", "limit_unit": "number/100 ml", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-coliform-bacteria", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-coliform-bacteria/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Coliform bacteria | 0 | number/100 ml", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Conductivity", "regulator": "European Union (Directive 2020/2184)", "limit_value": "2 500", "limit_unit": "\u03bcS cm -1 at 20 \u00b0C", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-conductivity", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-conductivity/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Conductivity | 2 500 | \u03bcS cm -1 at 20 \u00b0C", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Copper", "regulator": "European Union (Directive 2020/2184)", "limit_value": "2,0", "limit_unit": "mg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-copper", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-copper/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Copper | 2,0 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Cyanide", "regulator": "European Union (Directive 2020/2184)", "limit_value": "50", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-cyanide", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-cyanide/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Cyanide | 50 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Epichlorohydrin", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-epichlorohydrin", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-epichlorohydrin/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Epichlorohydrin | 0,10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Escherichia coli (E. coli)", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0", "limit_unit": "number/100 ml", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-escherichia-coli-e-coli", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-escherichia-coli-e-coli/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Escherichia coli (E. coli) | 0 | number/100 ml", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Fluoride", "regulator": "European Union (Directive 2020/2184)", "limit_value": "1,5", "limit_unit": "mg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-fluoride", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-fluoride/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Fluoride | 1,5 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Haloacetic acids (HAAs)", "regulator": "European Union (Directive 2020/2184)", "limit_value": "60", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-haloacetic-acids-haas", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-haloacetic-acids-haas/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Haloacetic acids (HAAs) | 60 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Hydrogen ion concentration", "regulator": "European Union (Directive 2020/2184)", "limit_value": "\u2265 6,5 and \u2264 9,5", "limit_unit": "pH units", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-hydrogen-ion-concentration", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-hydrogen-ion-concentration/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Hydrogen ion concentration | \u2265 6,5 and \u2264 9,5 | pH units", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Intestinal enterococci", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0", "limit_unit": "number/100 ml", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-intestinal-enterococci", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-intestinal-enterococci/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Intestinal enterococci | 0 | number/100 ml", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Iron", "regulator": "European Union (Directive 2020/2184)", "limit_value": "200", "limit_unit": "\u03bcg/l", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-iron", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-iron/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Iron | 200 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Lead", "regulator": "European Union (Directive 2020/2184)", "limit_value": "5", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-lead", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-lead/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Lead | 5 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Legionella", "regulator": "European Union (Directive 2020/2184)", "limit_value": "< 1 000", "limit_unit": "CFU/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-legionella", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-legionella/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Legionella | < 1 000 | CFU/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Manganese", "regulator": "European Union (Directive 2020/2184)", "limit_value": "50", "limit_unit": "\u03bcg/l", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-manganese", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-manganese/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Manganese | 50 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Mercury", "regulator": "European Union (Directive 2020/2184)", "limit_value": "1,0", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-mercury", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-mercury/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Mercury | 1,0 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Microcystin-LR", "regulator": "European Union (Directive 2020/2184)", "limit_value": "1,0", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-microcystin-lr", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-microcystin-lr/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Microcystin-LR | 1,0 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nickel", "regulator": "European Union (Directive 2020/2184)", "limit_value": "20", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-nickel", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-nickel/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Nickel | 20 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nitrate", "regulator": "European Union (Directive 2020/2184)", "limit_value": "50", "limit_unit": "mg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-nitrate", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-nitrate/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Nitrate | 50 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nitrite", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,50", "limit_unit": "mg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-nitrite", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-nitrite/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Nitrite | 0,50 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Oxidisability", "regulator": "European Union (Directive 2020/2184)", "limit_value": "5,0", "limit_unit": "mg/l O 2", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-oxidisability", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-oxidisability/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Oxidisability | 5,0 | mg/l O 2", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Pesticides", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-pesticides", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-pesticides/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Pesticides | 0,10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Pesticides Total", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,50", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-pesticides-total", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-pesticides-total/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Pesticides Total | 0,50 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "PFAS Total", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,50", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-pfas-total", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-pfas-total/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "PFAS Total | 0,50 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Polycyclic aromatic hydrocarbons", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-polycyclic-aromatic-hydrocarbons", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-polycyclic-aromatic-hydrocarbons/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Polycyclic aromatic hydrocarbons | 0,10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Selenium", "regulator": "European Union (Directive 2020/2184)", "limit_value": "20", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-selenium", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-selenium/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Selenium | 20 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Sodium", "regulator": "European Union (Directive 2020/2184)", "limit_value": "200", "limit_unit": "mg/l", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-sodium", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-sodium/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Sodium | 200 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Sulphate", "regulator": "European Union (Directive 2020/2184)", "limit_value": "250", "limit_unit": "mg/l", "limit_name": "Indicator parameter", "id": "european-union-directive-2020-2184-sulphate", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-sulphate/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Sulphate | 250 | mg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Sum of PFAS", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-sum-of-pfas", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-sum-of-pfas/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Sum of PFAS | 0,10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Tetrachloroethene and Trichloroethene", "regulator": "European Union (Directive 2020/2184)", "limit_value": "10", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-tetrachloroethene-and-trichloroethene", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-tetrachloroethene-and-trichloroethene/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Tetrachloroethene and Trichloroethene | 10 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Trihalomethanes Total", "regulator": "European Union (Directive 2020/2184)", "limit_value": "100", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-trihalomethanes-total", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-trihalomethanes-total/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Trihalomethanes Total | 100 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Uranium", "regulator": "European Union (Directive 2020/2184)", "limit_value": "30", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-uranium", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-uranium/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Uranium | 30 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Vinyl chloride", "regulator": "European Union (Directive 2020/2184)", "limit_value": "0,50", "limit_unit": "\u03bcg/l", "limit_name": "Parametric value", "id": "european-union-directive-2020-2184-vinyl-chloride", "url": "https://referencesource.org/drinking-water-contaminant-limits/european-union-directive-2020-2184-vinyl-chloride/", "source": "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184", "source_quote": "Vinyl chloride | 0,50 | \u03bcg/l", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1, 2 dichloroethane", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "3.0", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-1-2-dichloroethane", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-1-2-dichloroethane/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "1, 2 dichloroethane | 3.0 | \u00b5g/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Acrylamide", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.10", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-acrylamide", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-acrylamide/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Acrylamide | 0.10 | \u00b5g/1", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Aluminium", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "200", "limit_unit": "\u00b5gA1/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-aluminium", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-aluminium/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Aluminium | 200 | \u00b5gA1/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Antimony", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "5.0", "limit_unit": "\u00b5gSb/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-antimony", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-antimony/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Antimony | 5.0 | \u00b5gSb/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Arsenic", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "10", "limit_unit": "\u00b5gAs/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-arsenic", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-arsenic/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Arsenic | 10 | \u00b5gAs/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Benzene", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "1.0", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-benzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-benzene/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Benzene | 1.0 | \u00b5g/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Benzo(a)pyrene", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.010", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-benzo-a-pyrene", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-benzo-a-pyrene/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Benzo(a)pyrene | 0.010 | \u00b5g/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Boron", "regulator": "United Kingdom 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"limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Cadmium", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "5.0", "limit_unit": "\u00b5gCd/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-cadmium", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-cadmium/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Cadmium | 5.0 | \u00b5gCd/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chromium", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "50", "limit_unit": "\u00b5gCr/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-chromium", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-chromium/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Chromium | 50 | \u00b5gCr/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Coliform bacteria", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0", "limit_unit": "number/100ml", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-coliform-bacteria", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-coliform-bacteria/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Coliform bacteria | 0 | number/100ml | Service reservoirs", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Colour", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "20", "limit_unit": "mg/1 Pt/Co", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-colour", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-colour/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Colour | 20 | mg/1 Pt/Co |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Copper", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "2.0", "limit_unit": "mgCu/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-copper", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-copper/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Copper | 2.0 | mgCu/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Cyanide", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "50", "limit_unit": "\u00b5gCN/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-cyanide", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-cyanide/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Cyanide | 50 | \u00b5gCN/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Enterococci", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0", "limit_unit": "number/100ml", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-enterococci", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-enterococci/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Enterococci | 0 | number/100ml |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Epichlorohydrin", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.10", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-epichlorohydrin", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-epichlorohydrin/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Epichlorohydrin | 0.10 | \u00b5g/1", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Escherichia coli (E. coli)", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0", "limit_unit": "number/100ml", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-escherichia-coli-e-coli", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-escherichia-coli-e-coli/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Escherichia coli (E. coli) | 0 | number/100ml |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Fluoride", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "1.5", "limit_unit": "mgF/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-fluoride", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-fluoride/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Fluoride | 1.5 | mgF/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Iron", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "200", "limit_unit": "\u00b5gFe/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-iron", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-iron/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Iron | 200 | \u00b5gFe/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Lead", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "10", "limit_unit": "\u00b5gPb/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-lead", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-lead/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Lead | 10 | \u00b5gPb/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Manganese", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "50", "limit_unit": "\u00b5gMn/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-manganese", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-manganese/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Manganese | 50 | \u00b5gMn/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Mercury", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "1.0", "limit_unit": "\u00b5gHg/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-mercury", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-mercury/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Mercury | 1.0 | \u00b5gHg/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nickel", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "20", "limit_unit": "\u00b5gNi/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-nickel", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-nickel/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Nickel | 20 | \u00b5gNi/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nitrate", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "50", "limit_unit": "mgNO3/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-nitrate", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-nitrate/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Nitrate (ii) | 50 | mgNO3/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nitrite", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.50", "limit_unit": "mgNO2/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-nitrite", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-nitrite/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Nitrite (ii) | 0.50 | mgNO2/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Other pesticides", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.10", "limit_unit": "\u03bcg/l", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-other-pesticides", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-other-pesticides/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Other pesticides | 0.10 | \u03bcg/l |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Pesticides (Aldrin, Dieldrin, Heptachlor, Heptachlor epoxide)", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.030", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-pesticides-aldrin-dieldrin-heptachlor-heptachlor-epoxide", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-pesticides-aldrin-dieldrin-heptachlor-heptachlor-epoxide/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Pesticides (iii) (iv) | 0.030 | \u00b5g/1 | Consumers\u2019 taps | | Aldrin", "verified_fields": [ "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Pesticides: total", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.50", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-pesticides-total", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-pesticides-total/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Pesticides: total (v) | 0.50 | \u00b5g/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Polycyclic aromatic hydrocarbon", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.10", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-polycyclic-aromatic-hydrocarbon", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-polycyclic-aromatic-hydrocarbon/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "\u00b5g/1 | Consumers\u2019 taps | 22. | Polycyclic aromatic hydrocarbon (vi) | 0.10 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Selenium", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "10", "limit_unit": "\u00b5gSe/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-selenium", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-selenium/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Selenium | 10 | \u00b5gSe/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Sodium", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "200", "limit_unit": "mgNa/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-sodium", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-sodium/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Sodium | 200 | mgNa/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Tetrachloroethene and Trichloroethene", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "10", "limit_unit": "\u03bcg/l", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-tetrachloroethene-and-trichloroethene", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-tetrachloroethene-and-trichloroethene/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "10 | \u00b5gSe/1 | Consumers\u2019 taps | 24. | Tetrachloroethene and Trichloroethene (vii) | 10 | \u03bcg/l |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Tetrachloromethane", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "3", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-tetrachloromethane", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-tetrachloromethane/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Tetrachloromethane | 3 | \u00b5g/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Trihalomethanes: Total", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "100", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-trihalomethanes-total", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-trihalomethanes-total/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Trihalomethanes: Total (viii) | 100 | \u00b5g/1 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Turbidity", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "4", "limit_unit": "NTU", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-turbidity", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-turbidity/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Turbidity | 4 | NTU |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Vinyl chloride", "regulator": "United Kingdom (SI 2016/614)", "limit_value": "0.50", "limit_unit": "\u00b5g/1", "limit_name": "Prescribed concentration or value (maximum)", "id": "united-kingdom-si-2016-614-vinyl-chloride", "url": "https://referencesource.org/drinking-water-contaminant-limits/united-kingdom-si-2016-614-vinyl-chloride/", "source": "https://www.legislation.gov.uk/uksi/2016/614/schedule/1/made", "source_quote": "Vinyl chloride | 0.50 | \u00b5g/1", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1,1,1-Trichloroethane", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.2", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-1-1-1-trichloroethane", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-1-1-1-trichloroethane/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "1,1,1-Trichloroethane | 0.20 | 0.2", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1,1,2-Trichloroethane", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-1-1-2-trichloroethane", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-1-1-2-trichloroethane/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "1,1,2-Trichloroethane | 0.003 | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1,1-Dichloroethylene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.007", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-1-1-dichloroethylene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-1-1-dichloroethylene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "1,1-Dichloroethylene | 0.007 | 0.007", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1,2,4-Trichlorobenzene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.07", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-1-2-4-trichlorobenzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-1-2-4-trichlorobenzene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "1,2,4-Trichlorobenzene | 0.07 | 0.07", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1,2-Dibromo-3-chloropropane (DBCP)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-1-2-dibromo-3-chloropropane-dbcp", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-1-2-dibromo-3-chloropropane-dbcp/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "1,2-Dibromo-3-chloropropane ( DBCP ) | zero | 0.0002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1,2-Dichloroethane", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-1-2-dichloroethane", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-1-2-dichloroethane/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "1,2-Dichloroethane | zero | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "1,2-Dichloropropane", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-1-2-dichloropropane", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-1-2-dichloropropane/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "1,2-Dichloropropane | zero | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "2,4,5-TP (Silvex)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.05", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-2-4-5-tp-silvex", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-2-4-5-tp-silvex/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "2,4,5-TP ( Silvex ) | 0.05 | 0.05", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "2,4-D", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.07", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-2-4-d", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-2-4-d/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "2,4-D | 0.07 | 0.07", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Acrylamide", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-acrylamide", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-acrylamide/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Acrylamide | zero | TT 8", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Alachlor", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-alachlor", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-alachlor/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Alachlor | zero | 0.002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Alpha particles", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "15 picocuries per Liter (pCi/L)", "limit_unit": "pCi/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-alpha-particles", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-alpha-particles/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Alpha particles | none ---------- zero | 15 picocuries per Liter ( pCi/L )", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Antimony", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.006", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-antimony", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-antimony/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Antimony | 0.006 | 0.006", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Arsenic", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.010 as of 01/23/06", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-arsenic", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-arsenic/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "MCL or TT 1 ( mg/L ) 2 | Potential Health Effects from Long-Term Exposure Above the MCL (unless specified as short-term) | Sources of Contaminant in Drinking Water | Antimony | 0.006 | 0.006 | Increase in blood cholesterol; decrease in blood sugar | Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder | Arsenic Quick reference guide Consumer fact sheet | 0 | 0.010 as of 01/23/06 |", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Asbestos (fiber > 10 micrometers)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "7 MFL", "limit_unit": "MFL", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-asbestos-fiber-10-micrometers", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-asbestos-fiber-10-micrometers/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Asbestos (fiber > 10 micrometers) | 7 million fibers per liter ( MFL ) | 7 MFL", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Atrazine", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.003", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-atrazine", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-atrazine/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Atrazine | 0.003 | 0.003", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Barium", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "2", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-barium", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-barium/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Barium | 2 | 2", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Benzene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-benzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-benzene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Benzene | zero | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Benzo(a)pyrene (PAHs)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-benzo-a-pyrene-pahs", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-benzo-a-pyrene-pahs/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Benzo(a)pyrene (PAHs) | zero | 0.0002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Beryllium", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.004", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-beryllium", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-beryllium/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Beryllium | 0.004 | 0.004", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Beta particles and photon emitters", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "4 millirems per year", "limit_unit": "millirems per year", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-beta-particles-and-photon-emitters", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-beta-particles-and-photon-emitters/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Beta particles and photon emitters | none ---------- zero | 4 millirems per year", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Bromate", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.010", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-bromate", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-bromate/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Bromate | zero | 0.010", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Cadmium", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-cadmium", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-cadmium/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Cadmium | 0.005 | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Carbofuran", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.04", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-carbofuran", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-carbofuran/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Carbofuran | 0.04 | 0.04", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Carbon tetrachloride", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-carbon-tetrachloride", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-carbon-tetrachloride/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Carbon tetrachloride | zero | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chloramines (as Cl2)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "MRDL=4.0", "limit_unit": "mg/L", "limit_name": "MRDL (Maximum Residual Disinfectant Level)", "id": "us-epa-national-primary-drinking-water-regulations-chloramines-as-cl2", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-chloramines-as-cl2/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Chloramines (as Cl 2 ) | MRDLG =4 1 | MRDL =4.0 1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chlordane", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-chlordane", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-chlordane/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Chlordane | zero | 0.002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chlorine (as Cl2)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "MRDL=4.0", "limit_unit": "mg/L", "limit_name": "MRDL (Maximum Residual Disinfectant Level)", "id": "us-epa-national-primary-drinking-water-regulations-chlorine-as-cl2", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-chlorine-as-cl2/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Chlorine (as Cl 2 ) | MRDLG =4 1 | MRDL =4.0 1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chlorine dioxide (as ClO2)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "MRDL=0.8", "limit_unit": "mg/L", "limit_name": "MRDL (Maximum Residual Disinfectant Level)", "id": "us-epa-national-primary-drinking-water-regulations-chlorine-dioxide-as-clo2", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-chlorine-dioxide-as-clo2/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Chlorine dioxide (as ClO 2 ) | MRDLG =0.8 1 | MRDL =0.8 1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chlorite", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "1.0", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-chlorite", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-chlorite/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Chlorite | 0.8 | 1.0", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chlorobenzene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.1", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-chlorobenzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-chlorobenzene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Chlorobenzene | 0.1 | 0.1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Chromium (total)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.1", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-chromium-total", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-chromium-total/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Chromium (total) | 0.1 | 0.1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "cis-1,2-Dichloroethylene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.07", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-cis-1-2-dichloroethylene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-cis-1-2-dichloroethylene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "cis-1,2-Dichloroethylene | 0.07 | 0.07", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Copper", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT; Action Level=1.3", "limit_unit": "mg/L", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-copper", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-copper/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Copper | 1.3 | TT 7 ; Action Level=1.3", "verified_fields": [ "contaminant" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Cryptosporidium", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-cryptosporidium", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-cryptosporidium/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Cryptosporidium | zero | TT 3", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Cyanide (as free cyanide)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.2", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-cyanide-as-free-cyanide", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-cyanide-as-free-cyanide/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Cyanide (as free cyanide) | 0.2 | 0.2", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Dalapon", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.2", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-dalapon", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-dalapon/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Dalapon | 0.2 | 0.2", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Di(2-ethylhexyl) adipate", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.4", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-di-2-ethylhexyl-adipate", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-di-2-ethylhexyl-adipate/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Di(2-ethylhexyl) adipate | 0.4 | 0.4", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Di(2-ethylhexyl) phthalate", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.006", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-di-2-ethylhexyl-phthalate", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-di-2-ethylhexyl-phthalate/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Di(2-ethylhexyl) phthalate | zero | 0.006", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Dichloromethane", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-dichloromethane", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-dichloromethane/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Dichloromethane | zero | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Dinoseb", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.007", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-dinoseb", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-dinoseb/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Dinoseb | 0.007 | 0.007", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Dioxin (2,3,7,8-TCDD)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.00000003", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-dioxin-2-3-7-8-tcdd", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-dioxin-2-3-7-8-tcdd/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Dioxin ( 2,3,7,8-TCDD ) | zero | 0.00000003", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Diquat", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.02", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-diquat", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-diquat/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Diquat | 0.02 | 0.02", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Endothall", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.1", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-endothall", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-endothall/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Endothall | 0.1 | 0.1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Endrin", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-endrin", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-endrin/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Endrin | 0.002 | 0.002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Epichlorohydrin", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-epichlorohydrin", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-epichlorohydrin/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Epichlorohydrin | zero | TT 8", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Ethylbenzene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.7", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-ethylbenzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-ethylbenzene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Ethylbenzene | 0.7 | 0.7", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Ethylene dibromide", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.00005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-ethylene-dibromide", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-ethylene-dibromide/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Ethylene dibromide | zero | 0.00005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Fluoride", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "4.0", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-fluoride", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-fluoride/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Fluoride | 4.0 | 4.0", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Giardia lamblia", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-giardia-lamblia", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-giardia-lamblia/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Giardia lamblia | zero | TT 3", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Glyphosate", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.7", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-glyphosate", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-glyphosate/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Glyphosate | 0.7 | 0.7", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Haloacetic acids (HAA5)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.060", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-haloacetic-acids-haa5", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-haloacetic-acids-haa5/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Haloacetic acids ( HAA5) | n/a 6 | 0.060", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Hazard Index PFAS (HFPO-DA, PFBS, PFHxS, and PFNA)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "1(unitless)", "limit_unit": "unitless", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-hazard-index-pfas-hfpo-da-pfbs-pfhxs-and-pfna", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-hazard-index-pfas-hfpo-da-pfbs-pfhxs-and-pfna/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Hazard Index PFAS (HFPO-DA, PFBS, PFHxS, and PFNA) | 1(unitless) | 1(unitless)", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Heptachlor", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0004", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-heptachlor", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-heptachlor/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Heptachlor | zero | 0.0004", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Heptachlor epoxide", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-heptachlor-epoxide", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-heptachlor-epoxide/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Heptachlor epoxide | zero | 0.0002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Heterotrophic plate count (HPC)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-heterotrophic-plate-count-hpc", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-heterotrophic-plate-count-hpc/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Heterotrophic plate count ( HPC ) | n/a | TT 3", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Hexachlorobenzene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.001", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-hexachlorobenzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-hexachlorobenzene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Hexachlorobenzene | zero | 0.001", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Hexachlorocyclopentadiene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.05", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-hexachlorocyclopentadiene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-hexachlorocyclopentadiene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Hexachlorocyclopentadiene | 0.05 | 0.05", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "HFPO-DA (commonly known as GenX Chemicals)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "10 ppt", "limit_unit": "ppt", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-hfpo-da-commonly-known-as-genx-chemicals", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-hfpo-da-commonly-known-as-genx-chemicals/", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "HFPO-DA (commonly known as GenX Chemicals) | 10 ppt | 10 ppt", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "HFPO-DA (commonly knowns as GenX Chemicals)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.00001", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-hfpo-da-commonly-knowns-as-genx-chemicals", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-hfpo-da-commonly-knowns-as-genx-chemicals/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "HFPO-DA (commonly knowns as GenX Chemicals) | 0.00001 | 0.00001", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Lead", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT; Action Level=0.010", "limit_unit": "mg/L", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-lead", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-lead/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "monochloroacetic acid (0.07 mg/L ). Bromoacetic acid and dibromoacetic acid are regulated with this group but have no MCLGs. 7 Lead and copper are regulated by a treatment technique that requires systems to control the corrosiveness of their water.", "verified_fields": [ "contaminant", "limit_unit" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Legionella", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-legionella", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-legionella/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Legionella | zero | TT 3", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Lindane", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-lindane", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-lindane/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Lindane | 0.0002 | 0.0002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Mercury (inorganic)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-mercury-inorganic", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-mercury-inorganic/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Mercury (inorganic) | 0.002 | 0.002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Methoxychlor", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.04", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-methoxychlor", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-methoxychlor/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Methoxychlor | 0.04 | 0.04", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Mixtures containing two or more of PFHxS, PFNA, HFPO-DA, and PFBS", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "1 (unitless) Hazard Index", "limit_unit": "unitless", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-mixtures-containing-two-or-more-of-pfhxs-pfna-hfpo-da-and-pfbs", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-mixtures-containing-two-or-more-of-pfhxs-pfna-hfpo-da-and-pfbs/", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "Mixtures containing two or more of PFHxS, PFNA, HFPO-DA, and PFBS | 1 (unitless) Hazard Index | 1 (unitless) Hazard Index", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nitrate (measured as Nitrogen)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "10", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-nitrate-measured-as-nitrogen", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-nitrate-measured-as-nitrogen/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Nitrate (measured as Nitrogen) | 10 | 10", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Nitrite (measured as Nitrogen)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "1", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-nitrite-measured-as-nitrogen", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-nitrite-measured-as-nitrogen/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Nitrite (measured as Nitrogen) | 1 | 1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "o-Dichlorobenzene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.6", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-o-dichlorobenzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-o-dichlorobenzene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "o-Dichlorobenzene | 0.6 | 0.6", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Oxamyl (Vydate)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.2", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-oxamyl-vydate", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-oxamyl-vydate/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Oxamyl (Vydate) | 0.2 | 0.2", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "p-Dichlorobenzene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.075", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-p-dichlorobenzene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-p-dichlorobenzene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "p-Dichlorobenzene | 0.075 | 0.075", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Pentachlorophenol", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.001", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-pentachlorophenol", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-pentachlorophenol/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Pentachlorophenol | zero | 0.001", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "PFBS", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "No individual MCL", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-pfbs", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-pfbs/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFBS | No individual MCLG | No individual MCL", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "PFHxS", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.00001", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-pfhxs", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-pfhxs/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFHxS | 0.00001 | 0.00001", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ], "disagreements": [ { "field": "limit_value", "versions": [ { "value": "0.00001", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFHxS | 0.00001 | 0.00001", "as_of": "2026-08-06" }, { "value": "10 ppt", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFHxS | 10 ppt | 10 ppt", "as_of": "2026-08-06" } ] }, { "field": "limit_unit", "versions": [ { "value": "mg/L", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFHxS | 0.00001 | 0.00001", "as_of": "2026-08-06" }, { "value": "ppt", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFHxS | 10 ppt | 10 ppt", "as_of": "2026-08-06" } ] } ] }, { "contaminant": "PFNA", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.00001", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-pfna", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-pfna/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFNA | 0.00001 | 0.00001", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ], "disagreements": [ { "field": "limit_value", "versions": [ { "value": "0.00001", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFNA | 0.00001 | 0.00001", "as_of": "2026-08-06" }, { "value": "10 ppt", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFNA | 10 ppt | 10 ppt", "as_of": "2026-08-06" } ] }, { "field": "limit_unit", "versions": [ { "value": "mg/L", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFNA | 0.00001 | 0.00001", "as_of": "2026-08-06" }, { "value": "ppt", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFNA | 10 ppt | 10 ppt", "as_of": "2026-08-06" } ] } ] }, { "contaminant": "PFOA", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0000040", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-pfoa", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-pfoa/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFOA | zero | 0.0000040", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ], "disagreements": [ { "field": "limit_value", "versions": [ { "value": "0.0000040", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFOA | zero | 0.0000040", "as_of": "2026-08-06" }, { "value": "4.0 parts per trillion (ppt)", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFOA | Zero | 4.0 parts per trillion (ppt) (also expressed as ng/L)", "as_of": "2026-08-06" } ] }, { "field": "limit_unit", "versions": [ { "value": "mg/L", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFOA | zero | 0.0000040", "as_of": "2026-08-06" }, { "value": "ppt", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFOA | Zero | 4.0 parts per trillion (ppt) (also expressed as ng/L)", "as_of": "2026-08-06" } ] } ] }, { "contaminant": "PFOS", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0000040", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-pfos", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-pfos/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFOS | zero | 0.0000040", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ], "disagreements": [ { "field": "limit_value", "versions": [ { "value": "0.0000040", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFOS | zero | 0.0000040", "as_of": "2026-08-06" }, { "value": "4.0 ppt", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFOS | Zero | 4.0 ppt", "as_of": "2026-08-06" } ] }, { "field": "limit_unit", "versions": [ { "value": "mg/L", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "PFOS | zero | 0.0000040", "as_of": "2026-08-06" }, { "value": "ppt", "source": "https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas", "source_quote": "PFOS | Zero | 4.0 ppt", "as_of": "2026-08-06" } ] } ] }, { "contaminant": "Picloram", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.5", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-picloram", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-picloram/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Picloram | 0.5 | 0.5", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Polychlorinated biphenyls (PCBs)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.0005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-polychlorinated-biphenyls-pcbs", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-polychlorinated-biphenyls-pcbs/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Polychlorinated biphenyls ( PCBs ) | zero | 0.0005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Radium 226 and Radium 228 (combined)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "5 pCi/L", "limit_unit": "pCi/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-radium-226-and-radium-228-combined", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-radium-226-and-radium-228-combined/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Radium 226 and Radium 228 (combined) | none ---------- zero | 5 pCi/L", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Selenium", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.05", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-selenium", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-selenium/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Selenium | 0.05 | 0.05", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Simazine", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.004", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-simazine", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-simazine/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Simazine | 0.004 | 0.004", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Styrene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.1", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-styrene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-styrene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Styrene | 0.1 | 0.1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Tetrachloroethylene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-tetrachloroethylene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-tetrachloroethylene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Tetrachloroethylene | zero | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Thallium", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-thallium", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-thallium/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Thallium | 0.0005 | 0.002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Toluene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "1", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-toluene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-toluene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Toluene | 1 | 1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Total Coliforms (including fecal coliform and E. Coli)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "5.0%", "limit_unit": "%", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-total-coliforms-including-fecal-coliform-and-e-coli", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-total-coliforms-including-fecal-coliform-and-e-coli/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "zero | 5.0% 4 | Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present", "verified_fields": [ "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Total Trihalomethanes (TTHMs)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.080", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-total-trihalomethanes-tthms", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-total-trihalomethanes-tthms/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Total Trihalomethanes ( TTHMs ) | n/a 6 | 0.080", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Toxaphene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.003", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-toxaphene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-toxaphene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Toxaphene | zero | 0.003", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "trans-1,2-Dichloroethylene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.1", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-trans-1-2-dichloroethylene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-trans-1-2-dichloroethylene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "trans-1,2-Dichloroethylene | 0.1 | 0.1", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Trichloroethylene", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.005", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-trichloroethylene", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-trichloroethylene/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Trichloroethylene | zero | 0.005", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Turbidity", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-turbidity", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-turbidity/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Turbidity | n/a | TT 3", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Uranium", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "30 ug/L as of 12/08/03", "limit_unit": "ug/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-uranium", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-uranium/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Uranium | zero | 30 ug/L as of 12/08/03", "verified_fields": [ "contaminant", "limit_unit", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Vinyl chloride", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "0.002", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-vinyl-chloride", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-vinyl-chloride/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Vinyl chloride | zero | 0.002", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Viruses (enteric)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "TT", "limit_name": "Treatment Technique", "id": "us-epa-national-primary-drinking-water-regulations-viruses-enteric", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-viruses-enteric/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Viruses (enteric) | zero | TT 3", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] }, { "contaminant": "Xylenes (total)", "regulator": "US EPA (National Primary Drinking Water Regulations)", "limit_value": "10", "limit_unit": "mg/L", "limit_name": "MCL (Maximum Contaminant Level)", "id": "us-epa-national-primary-drinking-water-regulations-xylenes-total", "url": "https://referencesource.org/drinking-water-contaminant-limits/us-epa-national-primary-drinking-water-regulations-xylenes-total/", "source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations", "source_quote": "Xylenes (total) | 10 | 10", "verified_fields": [ "contaminant", "limit_value" ], "derived_fields": [ "limit_name", "regulator" ] } ] }