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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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016ND10ND
2017ND10ND
2018ND10ND
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
2014-04-144042508-01ND
2014-08-114082233-01ND
2015-04-205043209-01ND
2015-08-105082032-01ND
2016-05-096051486-01ND
2017-04-107041657-01ND
2018-04-098041866-01ND