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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

East Cherry Creek Valley Water and Sanitation District

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.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND140ND
2013ND40ND
2014ND40ND
2015ND100ND
2016ND40ND
2017ND30ND

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 Result
2012-04-12ND
2012-04-12ND
2012-04-13ND
2012-04-19ND
2012-04-23ND
2012-04-26ND
2012-04-26ND
2012-05-04ND
2012-05-10ND
2012-05-17ND
2012-05-17ND
2012-05-25ND
2012-07-13ND
2012-10-25ND
2013-06-05ND
2013-07-17ND
2013-11-14ND
2013-12-05ND
2014-02-21ND
2014-05-19ND
2014-08-18ND
2014-11-19ND
2015-02-03ND
2015-02-03ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2016-03-08ND
2016-08-03ND
2016-08-25ND
2016-08-31ND
2017-06-20ND
2017-08-15ND
2017-11-07ND