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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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019N/A00N/A

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
2014-03-05L4868749-1ND
2014-03-05L4868749-2ND
2015-02-12L5363847-1ND
2015-02-12L5363847-2ND
2016-02-02L5965906-1ND
2016-02-02L5965906-2ND
2017-02-14L6596357-1ND
2017-02-14L6596357-2ND
2018-02-133873710ND
2018-02-133873711ND