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EWG's Tap Water Database — 2019 UPDATE

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trans-1,2-Dichloroethylene

Magna Water District

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND20ND
2014N/A00N/A
2015N/A00N/A
2016ND40ND
2017ND90ND

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 Result
2013-02-08ND
2013-02-08ND
2016-01-26ND
2016-08-02ND
2016-08-02ND
2016-08-02ND
2017-02-16ND
2017-02-27ND
2017-05-10ND
2017-05-10ND
2017-07-11ND
2017-08-07ND
2017-08-07ND
2017-11-20ND
2017-11-20ND