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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Tbw/s. Pasco Wellfield Chemical Feed System

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
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2014-04-09ND
2014-06-03ND
2015-04-01ND
2015-04-07ND
2016-04-06ND
2016-05-10ND
2017-04-05ND
2017-04-18ND
2018-04-04ND
2018-04-09ND
2019-04-02ND
2019-04-03ND