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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Oconto Waterworks

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
2014ND60ND
2015ND30ND
2016ND20ND
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
2014-03-24776364ND
2014-03-24776365ND
2014-04-08778753ND
2014-04-08778750ND
2014-04-08778756ND
2014-09-09817071ND
2015-03-17848952ND
2015-03-17848957ND
2015-03-17848954ND
2016-01-25902657ND
2016-01-25902660ND
2017-02-06972346ND
2017-02-06972350ND