Barium
What is the water + organism criterion (µg/l) for Barium?
For Barium, water + organism criterion (µg/l) is 1,000; organism only criterion (µg/l) is —; publication year is 1986; cas registry number is 7440393, verified against its source on 2026-10-28.
Barium | 7440393 | 1,000 | — | 1986
— epa.gov, retrieved 2026-09-15
- Pollutant name
- Barium verified
- CAS Registry Number
- 7440393 verified
- Water + Organism criterion (µg/L)
- 1,000 verified
- Organism Only criterion (µg/L)
- — verified
- Publication Year
- 1986 verified
- EPA note on this criterion
- EPA has issued a Maximum Contaminant Level (MCL) for this chemical which may be more stringent. Refer to EPA's National Primary Drinking Water Regulations. This human health criterion is the same as originally published in the Quality Criteria for Water, 1976 ("Red Book") which predates the 1980 methodology and did not utilize the fish ingestion BCF approach. This same criterion value is published in the Quality Criteria for Water, 1986 ("Gold Book"). verified
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
EPA note on this criterion
Barium | 7440393 | 1,000 | — | 1986 | EPA has issued a Maximum Contaminant Level (MCL) for this chemical which may be more stringent. Refer to EPA's National Primary Drinking Water Regulations. This human health criterion is the same as originally published in the Quality Criteria for Water, 1976 ("Red Book") which predates the 1980 methodology and did not utilize the fish ingestion BCF approach. This same criterion value is published in the Quality Criteria for Water, 1986 ("Gold Book").
— all from epa.gov, retrieved 2026-09-15
Source
- epa.govhttps://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table