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EWG's Tap Water Database — 2021 UPDATE

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Alpha-hexachlorocyclohexane

Cliffdale West

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.

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56

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
2018N/A00N/A
20190.000196 ppb561ND - 0.0110 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2019-03-064218327ND
2019-03-064218218ND
2019-03-114222661ND
2019-03-114223083ND
2019-03-114222722ND
2019-03-114222861ND
2019-03-124224281ND
2019-03-124224233ND
2019-03-124224443ND
2019-03-124224410ND
2019-03-124224298ND
2019-03-144225969ND
2019-03-184230274ND
2019-03-184229914ND
2019-03-1842302860.0110 ppb
2019-03-184230298ND
2019-03-184230253ND
2019-03-194231609ND
2019-03-194231643ND
2019-03-204233222ND
2019-03-204233386ND
2019-03-204233367ND
2019-03-214234426ND
2019-03-254237117ND
2019-03-254237107ND
2019-03-254237101ND
2019-03-264238777ND
2019-03-264238873ND
2019-09-094413770ND
2019-09-094413863ND
2019-09-094414128ND
2019-09-094414207ND
2019-09-094413871ND
2019-09-104416625ND
2019-09-104416200ND
2019-09-104416619ND
2019-09-104416613ND
2019-09-104416579ND
2019-09-114417661ND
2019-09-114418235ND
2019-09-164422435ND
2019-09-164422481ND
2019-09-164422598ND
2019-09-174424792ND
2019-09-244433761ND
2019-09-254435367ND
2019-09-254435219ND
2019-09-254435253ND
2019-09-264436795ND
2019-10-034445097ND
2019-10-104452424ND
2019-10-104452390ND
2019-10-104452385ND
2019-10-104452413ND
2019-10-284469462ND
2019-12-044504544ND