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

For alpha-Endosulfan (P), cas registry number is 959988; water + organism criterion (µg/l) is 20; organism only criterion (µg/l) is 30, verified against its source on 2026-08-17.

- **Pollutant name:** alpha-Endosulfan (P) _(verified: appears in the quote below)_
- **CAS Registry Number:** 959988 _(verified: appears in the quote below)_
- **Water + Organism criterion (µg/L):** 20 _(verified: appears in the quote below)_
- **Organism Only criterion (µg/L):** 30 _(verified: appears in the quote below)_

## What the source says

> alpha-Endosulfan (P) | 959988 | 20 | 30 | 2015

## 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/).