Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Alpha-hexachlorocyclohexane

Freeport

Alpha-HCH is a byproduct of the production of the insecticide lindane, which is no longer used in the U.S. The International Agency for Research on Cancer has classified all forms of this chemical as possibly carcinogenic to humans.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND30ND
2019ND30ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-07-177058417012SEA1ND
2018-07-177058417013SEA1ND
2018-07-177058417014SEA1ND
2019-01-287077690012SEA2ND
2019-01-287077690013SEA2ND
2019-01-287077690014SEA2ND