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EWG's Tap Water Database — 2021 UPDATE

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Alpha-hexachlorocyclohexane

Ridgewood Water

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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49

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
2018ND480ND
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-06-053953370ND
2018-06-073955661ND
2018-06-073955724ND
2018-06-073955695ND
2018-06-073955860ND
2018-06-073955810ND
2018-06-133960694ND
2018-06-133961252ND
2018-06-133961496ND
2018-06-133961326ND
2018-06-133961354ND
2018-06-183967138ND
2018-06-183967148ND
2018-06-193967158ND
2018-06-193967178ND
2018-06-193967119ND
2018-06-193967113ND
2018-07-113986334ND
2018-07-113986331ND
2018-07-113986377ND
2018-07-113986335ND
2018-07-123986354ND
2018-07-314006404ND
2018-07-314006402ND
2018-07-314006403ND
2018-07-314006401ND
2018-09-134056222ND
2018-12-054141811ND
2018-12-054142300ND
2018-12-054141737ND
2018-12-054142398ND
2018-12-054142237ND
2018-12-054142201ND
2018-12-104145700ND
2018-12-104145692ND
2018-12-104145505ND
2018-12-104145613ND
2018-12-124149042ND
2018-12-124148875ND
2018-12-124149055ND
2018-12-124149028ND
2018-12-124148949ND
2018-12-124149840ND
2018-12-134150198ND
2018-12-134150285ND
2018-12-134150007ND
2018-12-134149922ND
2018-12-274160087ND
2019-03-044215756ND