# Nickel (P) — EPA national recommended water quality criteria for human health: pollutant concentration thresholds

For Nickel (P), cas registry number is 7440020; water + organism criterion (µg/l) is 610; organism only criterion (µg/l) is 4,600, verified against its source on 2026-08-17.

- **Pollutant name:** Nickel (P) _(verified: appears in the quote below)_
- **CAS Registry Number:** 7440020 _(verified: appears in the quote below)_
- **Water + Organism criterion (µg/L):** 610 _(verified: appears in the quote below)_
- **Organism Only criterion (µg/L):** 4,600 _(verified: appears in the quote below)_

## What the source says

> Nickel (P) | 7440020 | 610 | 4,600 | 1998

## 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/).