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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

California Water Service (CWS) - Selma

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

MORE ABOUT THIS CONTAMINANT

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND20ND
2016ND60ND
2017ND40ND
2018ND20ND
2019ND70ND

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
2014-02-195701-038-1330ND
2014-04-165701-013-0926ND
2014-04-165701-005-0908ND
2014-10-215701-014-1053ND
2015-01-275701-021-0959ND
2015-10-209590-004-1110ND
2016-04-195701-023-0956ND
2016-04-195701-018-1020ND
2016-07-265701-001-0914ND
2016-07-265701-022-0941ND
2016-09-275701-036-1010ND
2016-11-095701-010-1030ND
2017-03-075810-038-1041ND
2017-04-115701-005-1030ND
2017-04-115701-013-1046ND
2017-10-245701-014-1122ND
2018-01-235701-021-0908ND
2018-10-165810-004-0947ND
2019-04-235701-018-1100ND
2019-04-235701-023-1046ND
2019-07-175701-022-0943ND
2019-10-085701-018-1105ND
2019-10-085701-023-1048ND
2019-10-175701-010-1051ND
2019-10-215701-036-1030ND