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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Glendale Subdivision

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND40ND
2017ND20ND
2018N/A00N/A
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
2014-10-02E141000111ND
2015-09-19VA010-DCLSND
2015-10-29VA010-DCLSND
2016-02-23E151200874ND
2016-04-28E160403249ND
2016-09-15E160705129ND
2016-12-27E161206048ND
2017-03-30E161103443ND
2017-06-29E170402937ND