# gamma-Hexachlorocyclohexane (HCH) [Lindane] (P) — EPA national recommended water quality criteria for human health: pollutant concentration thresholds For gamma-Hexachlorocyclohexane (HCH) [Lindane] (P), cas registry number is 58899; water + organism criterion (µg/l) is 4.2; organism only criterion (µg/l) is 4.4, verified against its source on 2026-08-17. - **Pollutant name:** gamma-Hexachlorocyclohexane (HCH) [Lindane] (P) _(verified: appears in the quote below)_ - **CAS Registry Number:** 58899 _(verified: appears in the quote below)_ - **Water + Organism criterion (µg/L):** 4.2 _(verified: appears in the quote below)_ - **Organism Only criterion (µg/L):** 4.4 _(verified: appears in the quote below)_ ## What the source says > gamma-Hexachlorocyclohexane (HCH) [Lindane] (P) | 58899 | 4.2 | 4.4 | 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/).