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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Nashville Water Department #1

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND

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
2014-09-02ND
2014-09-02ND
2014-09-02ND
2015-08-17ND
2015-08-17ND
2016-02-18ND
2016-02-18ND
2017-08-08ND
2017-08-08ND
2018-05-08ND
2018-05-08ND
2019-02-26ND
2019-02-26ND