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EWG's Tap Water Database — 2019 UPDATE

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1,1-Dichloroethylene

City of Black Hawk

1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 7 ppb

The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.

ppb = parts per billion

All test results

Date Result
2012-05-15ND
2012-06-25ND
2013-02-05ND
2013-02-19ND
2014-02-25ND
2014-05-27ND
2015-05-12ND
2015-08-12ND
2016-03-07ND
2016-03-08ND
2017-03-08ND
2017-04-18ND