Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

cis-1,2-Dichloroethylene

North Texas Municipal Water District Tawakoni Water Treatment Plant

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND10ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND10ND

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
2012-12-121212559004ND
2013-08-20Q1305807006ND
2014-11-10Q1455284004ND
2015-05-28Q1519648001ND
2016-05-25Q1620796006ND
2017-06-27Q1726831005ND