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EWG's Tap Water Database — 2019 UPDATE

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trans-1,2-Dichloroethylene

Valencia Heights Water Company

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
2014ND30ND
2015ND20ND
2016ND30ND
2017ND30ND

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
2012-07-199588-012-0830ND
2012-07-199588-010-0815ND
2012-07-199588-005-0800ND
2013-07-099588-012-0755ND
2013-07-099588-010-0735ND
2013-07-099588-005-0745ND
2014-07-119588-012-1120ND
2014-07-119588-010-1105ND
2014-07-119588-005-1140ND
2015-07-169588-012-0730ND
2015-07-169588-010-0745ND
2016-04-069588-005-0810ND
2016-07-159588-012-0840ND
2016-07-159588-010-0830ND
2017-04-189588-005-0910ND
2017-07-129588-012-0840ND
2017-07-129588-010-0850ND