# Copper (P) — EPA national recommended water quality criteria for human health: pollutant concentration thresholds For Copper (P), cas registry number is 7440508; water + organism criterion (µg/l) is 1,300; organism only criterion (µg/l) is —, verified against its source on 2026-08-17. - **Pollutant name:** Copper (P) _(verified: appears in the quote below)_ - **CAS Registry Number:** 7440508 _(verified: appears in the quote below)_ - **Water + Organism criterion (µg/L):** 1,300 _(verified: appears in the quote below)_ - **Organism Only criterion (µg/L):** — _(verified: appears in the quote below)_ ## What the source says > Copper (P) | 7440508 | 1,300 | — | 1992 ## Source - https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table Last verified: 2026-08-17. Review by: 2028-08-16. Part of [EPA national recommended water quality criteria for human health: pollutant concentration thresholds](https://referencesource.org/epa-water-quality-criteria-human-health/).