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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

City of Colton

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

MORE ABOUT THIS CONTAMINANT

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND30ND
2015ND10ND
2016ND120ND
2017N/A00N/A
2018ND20ND
2019ND100ND

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
2014-02-193761-030-0740ND
2014-05-083761-030-0740ND
2014-08-193761-030-0930ND
2015-08-203761-010-0640ND
2016-06-133761-016-1030ND
2016-09-073761-008-0800ND
2016-09-073761-024-1325ND
2016-09-073761-021-0845ND
2016-09-073761-011-0810ND
2016-09-073761-017-0705ND
2016-09-073761-030-0900ND
2016-09-073761-016-0925ND
2016-09-073761-015-0745ND
2016-09-073761-014-0730ND
2016-09-073761-010-1535ND
2016-12-143761-023-1020ND
2018-06-123761-023-1000ND
2018-09-063761-012-1330ND
2019-07-303761-017-0830ND
2019-09-123761-030-0955ND
2019-09-123761-017-1040ND
2019-09-123761-021-1100ND
2019-09-123761-016-1020ND
2019-09-123761-011-1320ND
2019-09-163761-023-0000ND
2019-09-163761-015-0000ND
2019-09-163761-010-0000ND
2019-09-163761-012-0000ND