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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

City of Fremont

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

MORE ABOUT THIS CONTAMINANT

 

43

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
2014ND90ND
2015ND130ND
2016ND70ND
2017ND30ND
2018ND30ND
2019ND80ND

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
2014-05-05294530ND
2014-09-15324195ND
2014-09-15324196ND
2014-09-15324197ND
2014-09-15324198ND
2014-10-27332949ND
2014-10-27332950ND
2014-10-27332951ND
2014-10-27332952ND
2015-03-04348741ND
2015-03-04348743ND
2015-03-04348742ND
2015-03-04348740ND
2015-04-29353685ND
2015-06-08364979ND
2015-06-08364980ND
2015-06-08364981ND
2015-06-08364982ND
2015-09-09378769ND
2015-09-09378768ND
2015-09-09378766ND
2015-09-09378767ND
2016-05-04ND
2016-06-01ND
2016-06-01ND
2016-09-14ND
2016-09-14ND
2016-09-14ND
2016-09-26ND
2017-04-26ND
2017-09-12ND
2017-09-12ND
2018-06-11542840ND
2018-09-17571932ND
2018-09-17571933ND
2019-04-29604841ND
2019-04-29604842ND
2019-07-29621293ND
2019-08-19619939ND
2019-09-03630420ND
2019-09-03630421ND
2019-12-04619940ND
2019-12-04638582ND