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EWG's Tap Water Database — 2019 UPDATE

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trans-1,2-Dichloroethylene

California Water Service Company - Hermosa / Redondo Beach

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 60 ppb

The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for trans-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
2012-06-185701-005-0900ND
2012-08-089590-001-1345ND
2013-06-195701-005-0917ND
2013-08-079590-001-1247ND
2014-06-255701-005-0925ND
2014-09-035701-001-1450ND
2015-06-175701-005-0950ND
2015-08-265701-001-1210ND
2016-06-215701-005-1300ND
2016-08-179590-001-1010ND
2017-06-215701-005-1330ND