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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

USAF Davis Monthan AFB

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND50ND
2016N/A00N/A
2017N/A00N/A
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
2015-01-1315A0446-01(4V)ND
2015-01-1315A0446-02(4V)ND
2015-01-1315A0446-03(4V)ND
2015-01-1315A0446-04(4V)ND
2015-01-1315A0446-05(4V)ND
2018-12-1718L0519-01(4V)ND