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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

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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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND50ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2014-03-11L4869086-1ND
2014-06-03L4983374-1ND
2014-06-11L4000194-1ND
2014-09-19L5112163-1ND
2014-09-19L5112163-2ND
2014-12-05L5247325-1ND
2014-12-05L5247325-2ND
2015-03-11L5364246-1ND
2015-03-11L5364246-2ND
2015-06-08L5497305-1ND
2015-06-08L5497344-1ND
2015-06-08L5497305-2ND
2016-05-10L6125158-1ND
2016-05-10L6125158-2ND
2017-06-13L6718316-1ND
2017-06-13L6718316-2ND
2018-05-147052088001-VOCND
2018-05-147052089001-VOCND
2019-06-047092726001-VOCND
2019-08-2070102226001-VOCND