Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

cis-1,2-Dichloroethylene

Upper Hanover Water Authority

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND30ND
2016ND30ND
2017ND50ND
2018ND60ND
2019ND50ND

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
2014-03-12140010201ND
2014-03-12140010202ND
2014-03-12140010203ND
2014-03-12140010200ND
2015-02-1812402280ND
2015-02-1812402301ND
2015-03-0412516090ND
2016-02-0313753527ND
2016-02-0313753485ND
2016-02-0313753506ND
2017-09-2616727588ND
2017-09-2616727587ND
2017-09-2616727586ND
2017-09-2616727585ND
2017-11-2217024138ND
2018-01-308001978-01ND
2018-04-258008140-01ND
2018-07-178017906-01ND
2018-07-258019752-01ND
2018-07-258019752-02ND
2018-10-108028641-01ND
2019-01-238038660-01ND
2019-05-079009685-01ND
2019-08-218038658-01ND
2019-09-249034252-01ND
2019-12-119033962-01ND