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EWG's Tap Water Database — 2021 UPDATE

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Alpha-hexachlorocyclohexane

Regional Water Authority

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.

MORE ABOUT THIS CONTAMINANT

 

30

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
2019ND260ND

ppb = parts per billion

All test results

Date Lab ID Result
2019-05-08200531318AND
2019-05-09200531444AND
2019-05-10200531712AND
2019-05-10200531711AND
2019-05-10200531619AND
2019-05-14200532082AND
2019-05-14200532080AND
2019-05-14200531907AND
2019-05-15200532281AND
2019-05-15200532280AND
2019-05-15200532165AND
2019-08-12200544182AND
2019-08-13200544347AND
2019-08-14200544887AND
2019-08-15200545131AND
2019-11-04200554969AND
2019-11-04200554989AND
2019-11-04200554853AND
2019-11-04200554990AND
2019-11-04200554854AND
2019-11-05200555123AND
2019-11-05200555104AND
2019-11-05200555122AND
2019-11-05200555090AND
2019-11-22200557836AND
2019-11-29200558314AND
2020-02-03200564577AND
2020-02-03200564472AND
2020-02-04200564870AND
2020-02-05200564915AND