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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Mendota

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015N/A00N/A
2016ND40ND
2017ND10ND
2018ND20ND
2019ND40ND

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
2014-01-22SA40453-01_01ND
2014-01-22SA40453-02_01ND
2014-01-22SA40453-03_01ND
2016-01-1916A0424-01_01ND
2016-04-1216D0262-01_01ND
2016-07-1216G0397-01_01ND
2016-10-1716J0668-01_01ND
2017-01-1117A0378-01_01ND
2018-01-1818A0361-01_01ND
2018-01-1818A0361-02_01ND
2019-03-1119C0230-01ND
2019-03-1119C0230-02ND
2019-03-1119C0231-01ND
2019-03-1319C0298-01ND