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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Aqua Pa Perkiomen Township

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

MORE ABOUT THIS CONTAMINANT

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
2016ND50ND
2017ND50ND
2018ND50ND
2019ND50ND

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
2014-02-04AE22408ND
2014-02-05AE22411ND
2014-02-19AE23934ND
2014-02-19AE23933ND
2014-02-19AE23939ND
2015-02-0312404368ND
2015-02-0312404389ND
2015-02-0312404410ND
2015-02-0312404431ND
2015-02-0312404452ND
2016-01-2013755355ND
2016-01-2013755397ND
2016-01-2013755376ND
2016-01-2013755313ND
2016-01-2013755334ND
2017-02-2115658851ND
2017-03-2815799033ND
2017-04-1915941132ND
2017-06-2116260406ND
2017-12-2017165028ND
2018-02-27AF76926ND
2018-02-27AF76923ND
2018-02-27AF76925ND
2018-02-27AF76922ND
2018-07-19AF90332ND
2019-04-24AG14547ND
2019-04-24AG14545ND
2019-04-24AG14549ND
2019-04-24AG14552ND
2019-05-08AG17044ND