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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Golden State Water Company - Barstow

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.

MORE ABOUT THIS CONTAMINANT

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND150ND
2015N/A00N/A
2016N/A00N/A
2017ND10ND
2018ND140ND
2019ND20ND

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
2014-02-112706-034-0749ND
2014-02-112706-033-0716ND
2014-02-112706-019-0801ND
2014-02-112706-017-0732ND
2014-02-112706-014-0700ND
2014-02-122706-013-0843ND
2014-02-122706-008-0804ND
2014-02-122706-009-0747ND
2014-02-122706-011-0730ND
2014-02-122706-012-0717ND
2014-02-182706-020-0936ND
2014-02-182706-021-0911ND
2014-02-182706-003-0750ND
2014-02-182706-002-0817ND
2014-02-182706-001-0841ND
2017-02-219590-018-1409ND
2018-05-149590-002-1031ND
2018-05-149590-033-0841ND
2018-05-149590-021-1003ND
2018-05-149590-017-1330ND
2018-05-149590-014-0827ND
2018-05-149590-013-1245ND
2018-05-149590-012-1259ND
2018-05-149590-008-1315ND
2018-05-149590-005-0723ND
2018-05-149590-003-1040ND
2018-05-149590-001-1025ND
2018-05-309590-034-1200ND
2018-05-309590-020-1050ND
2018-05-309590-019-1225ND
2019-04-159590-011-1303ND
2019-08-059590-009-1155ND