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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Tennessee American Water

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND20ND
2014ND40ND
2015ND10ND
2016ND40ND
2017ND40ND

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
2012-02-15ND
2012-08-08ND
2012-11-15ND
2013-02-12ND
2013-05-08ND
2014-02-04ND
2014-05-14ND
2014-11-11ND
2014-11-11ND
2015-07-07ND
2016-01-19ND
2016-04-11ND
2016-07-13ND
2016-10-13ND
2017-01-10ND
2017-04-17ND
2017-07-11ND
2017-10-09ND