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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Aqua Pa Uwchlan

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

MORE ABOUT THIS CONTAMINANT

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND60ND
2016ND60ND
2017ND60ND
2018ND60ND
20190.0857 ppb71ND - 0.600 ppb

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 Lab ID Result
2014-02-06AE22430ND
2014-02-14AE22387ND
2014-02-14AE22385ND
2014-02-21AE23943ND
2014-02-21AE23946ND
2014-04-23AE29861ND
2015-02-0312395456ND
2015-02-0312395498ND
2015-02-0312395519ND
2015-02-0312395540ND
2015-02-0412395435ND
2015-02-0412395477ND
2016-01-2213746280ND
2016-01-2213746259ND
2016-01-2213746217ND
2016-01-2213746238ND
2016-02-1013864184ND
2016-02-1013864205ND
2017-03-2815787978ND
2017-03-2815787957ND
2017-04-1915928764ND
2017-04-1915928785ND
2017-04-2115928743ND
2017-06-2116249808ND
2018-01-29AF74449ND
2018-01-31AF73819ND
2018-02-26AF76934ND
2018-02-26AF76935ND
2018-03-13AF77984ND
2018-03-13AF77985ND
2019-03-06AG10267ND
2019-03-06AG102680.600 ppb
2019-03-06AG10266ND
2019-03-12AG10439ND
2019-03-12AG10441ND
2019-03-27AG11746ND
2019-11-07AG37520ND