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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

City of Norfolk

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

MORE ABOUT THIS CONTAMINANT

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015ND170ND
2016ND170ND
2017ND180ND
2018ND170ND
2019ND170ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-19294408ND
2014-07-08309698ND
2014-08-25318958ND
2014-08-25318959ND
2014-08-25318960ND
2014-08-25318961ND
2014-12-01335661ND
2014-12-01335660ND
2014-12-01335663ND
2014-12-01335662ND
2015-02-23348703ND
2015-02-23348702ND
2015-02-23348701ND
2015-02-23348700ND
2015-06-08364942ND
2015-06-08364941ND
2015-06-08364940ND
2015-06-08364939ND
2015-08-03381425ND
2015-08-24378725ND
2015-08-24378724ND
2015-08-24378723ND
2015-08-24378722ND
2015-11-30399142ND
2015-11-30399141ND
2015-11-30399140ND
2015-11-30399139ND
2016-02-22ND
2016-02-22ND
2016-02-22ND
2016-02-22ND
2016-06-06ND
2016-06-06ND
2016-06-06ND
2016-06-06ND
2016-07-25ND
2016-08-22ND
2016-08-22ND
2016-08-22ND
2016-08-22ND
2016-11-28ND
2016-11-28ND
2016-11-28ND
2016-11-28ND
2017-02-27ND
2017-02-27ND
2017-02-27ND
2017-02-27ND
2017-06-05ND
2017-06-05ND
2017-06-05ND
2017-06-05ND
2017-06-12ND
2017-07-31ND
2017-08-28ND
2017-08-28ND
2017-08-28ND
2017-08-28ND
2017-11-27ND
2017-11-27ND
2017-11-27ND
2017-11-27ND
2018-02-26534052ND
2018-02-26534051ND
2018-02-26534050ND
2018-02-26534049ND
2018-05-29549771ND
2018-05-29549768ND
2018-05-29549769ND
2018-05-29549770ND
2018-07-30560134ND
2018-08-27568466ND
2018-08-27568465ND
2018-08-27568464ND
2018-08-27568463ND
2018-11-26583428ND
2018-11-26583429ND
2018-11-26583430ND
2018-11-26583431ND
2019-02-26595198ND
2019-02-26595199ND
2019-02-26595200ND
2019-02-26595201ND
2019-05-28605753ND
2019-05-28605755ND
2019-05-28605754ND
2019-05-28605752ND
2019-07-30621214ND
2019-08-26628211ND
2019-08-26628213ND
2019-08-26628212ND
2019-08-26628210ND
2019-12-02644932ND
2019-12-02644931ND
2019-12-02644930ND
2019-12-02644929ND