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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Hiwanee Water Association #2

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
2014N/A00N/A
2015N/A00N/A
2016ND10ND
2017N/A00N/A
2018ND50ND
2019ND30ND

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
2016-09-12160913-020VOND
2018-02-05180206-007VOND
2018-05-14180515-001VOND
2018-08-22180823-005VOND
2018-10-31181101-002VOND
2018-10-31181101-003VOND
2019-03-11190312-006VOND
2019-05-15190516-001VOND
2019-09-04190905-005VOND