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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Holmen Waterworks

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND40ND
2016ND40ND
2017ND90ND
2018ND40ND
2019ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-274010717-01ND
2014-02-104020232-04ND
2014-02-104020232-05ND
2014-04-144040482-01ND
2014-04-144040482-02ND
2014-07-084070258-01ND
2014-10-134100440-03ND
2015-02-165020455-01ND
2015-04-135040450-03ND
2015-07-135070430-01ND
2015-10-125100359-02ND
2016-03-016030031-03ND
2016-04-116040319-01ND
2016-07-126070348-01ND
2016-11-026110114-03ND
2017-02-1317B0415-01ND
2017-04-1717D0555-04ND
2017-04-1717D0555-01ND
2017-04-1717D0555-02ND
2017-04-1717D0555-03ND
2017-07-1017G0223-04ND
2017-07-1017G0223-03ND
2017-09-0517I0044-01ND
2017-12-1117L0289-01ND
2018-02-0618B0116-04ND
2018-04-0318D0053-03ND
2018-07-1618G0457-01ND
2018-10-2918J0974-01ND
2019-04-2219D0705-01ND
2019-06-1819F0561-01ND
2019-07-0819G0196-01ND
2019-08-1319H0413-01ND
2019-10-0719J0251-04ND