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EWG's Tap Water Database — 2021 UPDATE

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Alpha-hexachlorocyclohexane

Makawao

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.

 

10

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
2018ND100ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-23201802270858ND
2018-02-23201802270860ND
2018-02-23201802070500ND
2018-02-23201802070501ND
2018-05-21201805220596ND
2018-08-28201808300770ND
2018-08-29201808310509ND
2018-08-29201808310507ND
2018-08-29201808310423ND
2018-12-13201812180281ND