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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Ilion

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND10ND
2014ND10ND
2015ND30ND
2016ND30ND
2017ND40ND

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
2012-01-091200380-POCND
2013-01-071300259-001-POCND
2014-01-131400485-POCND
2015-01-121500411-001-POCND
2015-05-111506282-001-POCND
2015-05-111506281-01-POCND
2016-01-111600465-001-POCND
2016-01-111600454-001-POCND
2016-01-111600466-001A-POCND
2017-08-211713652-001-POCND
2017-08-211713652-002-POCND
2017-12-041719628-002-POCND
2017-12-041719628-001-POCND