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EWG's Tap Water Database — 2019 UPDATE

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1,1-Dichloroethylene

City of Chino Hills

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

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013N/A00N/A
2014ND20ND
2015N/A00N/A
20160.365 ppb21ND - 0.730 ppb
2017ND40ND

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
2012-07-184790-014-1130ND
2014-01-234790-001-1300ND
2014-01-234790-017-1330ND
2016-03-034790-014-1130ND
2016-03-034790-024-10300.730 ppb
2017-02-169588-001-1010ND
2017-02-169588-017-1040ND
2017-04-199588-009-1030ND
2017-04-199588-010-0945ND