# Manganese — EPA national recommended water quality criteria for human health: pollutant concentration thresholds

For Manganese, cas registry number is 7439965; water + organism criterion (µg/l) is 50; organism only criterion (µg/l) is 100, verified against its source on 2026-08-17.

- **Pollutant name:** Manganese _(verified: appears in the quote below)_
- **CAS Registry Number:** 7439965 _(verified: appears in the quote below)_
- **Water + Organism criterion (µg/L):** 50 _(verified: appears in the quote below)_
- **Organism Only criterion (µg/L):** 100 _(verified: appears in the quote below)_

## What the source says

> Manganese | 7439965 | 50 | 100 | 1993

## 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/).