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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Mililani

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
2013N/A00N/A
2014ND70ND
2015ND50ND
2016ND30ND
2017ND40ND
2018ND20ND
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
2014-02-11201402140316ND
2014-02-18201402200344ND
2014-02-18201402200346ND
2014-02-25201402280294ND
2014-04-07201404090488ND
2014-07-08201407100617ND
2014-10-24201410280162ND
2015-01-20201501220075ND
2015-01-29201501300118ND
2015-04-10201504140151ND
2015-07-13201507150474ND
2015-10-16201510210706ND
2016-01-14ND
2016-01-14ND
2016-04-11ND
2017-02-01ND
2017-02-09ND
2017-11-01ND
2017-11-14ND
2018-01-11201712280237ND
2018-04-10201804130364ND
2019-01-29201901300201ND
2019-01-29201901300202ND
2019-03-12201903020135ND
2019-06-27201906190032ND