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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Eureka

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

MORE ABOUT THIS CONTAMINANT

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND130ND
2015ND90ND
2016ND80ND
2017ND110ND
2018ND70ND
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
2014-01-28AC17703ND
2014-01-28AC17702ND
2014-01-28AC17704ND
2014-04-30AC22515ND
2014-04-30AC22516ND
2014-04-30AC22517ND
2014-07-30AC30062ND
2014-07-30AC30063ND
2014-07-30AC30064ND
2014-08-20AC33710ND
2014-10-28AC37317ND
2014-10-28AC37318ND
2014-10-28AC37319ND
2015-01-30AC41366ND
2015-01-30AC41365ND
2015-04-29AC45799ND
2015-04-29AC45798ND
2015-08-19AC58580ND
2015-08-19AC58581ND
2015-09-29AC60323ND
2015-10-29AC62082ND
2015-10-29AC62083ND
2016-01-29AC65842ND
2016-01-29AC65841ND
2016-04-28AC70157ND
2016-04-28AC70156ND
2016-08-03AC80846ND
2016-08-03AC80845ND
2016-10-24AC86077ND
2016-10-24AC86078ND
2017-01-23AC89907ND
2017-01-23AC89908ND
2017-04-26AC95129ND
2017-04-26AC95128ND
2017-07-26AD02414ND
2017-07-26AD02413ND
2017-08-15AD04262ND
2017-08-15AD04260ND
2017-08-15AD04261ND
2017-10-30AD08623ND
2017-10-30AD08622ND
2018-01-22AD12092ND
2018-01-22AD12091ND
2018-05-08AD18727ND
2018-05-08AD18728ND
2018-07-12AD29644ND
2018-07-12AD29645ND
2018-09-14AD33875ND
2019-01-16AD38511ND
2019-01-16AD38512ND
2019-04-17AD46829ND
2019-04-17AD46830ND
2019-07-18AD52843ND
2019-07-18AD52844ND
2019-10-24AD57534ND
2019-10-24AD57535ND