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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

La Habra Heights County Water District

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

MORE ABOUT THIS CONTAMINANT

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND50ND
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
2014-01-089588-009-0929ND
2014-04-119588-010-0930ND
2014-07-229588-005-0950ND
2015-03-049588-009-0928ND
2015-04-109588-010-0920ND
2015-07-289588-005-0947ND
2015-09-169588-006-1010ND
2016-03-219588-009-0940ND
2016-07-139588-005-0907ND
2016-07-139588-010-0840ND
2016-07-139588-006-0857ND
2017-01-179588-009-0925ND
2017-07-199588-006-0934ND
2017-07-199588-010-0900ND
2017-07-199588-005-0915ND
2018-01-119588-009-0847ND
2018-07-209588-006-1014ND
2018-07-209588-005-1000ND
2018-08-139588-010-0850ND
2018-10-199588-010-0945ND
2019-02-219588-009-0842ND
2019-07-229588-006-0905ND
2019-07-229588-010-0844ND
2019-07-229588-005-0919ND