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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Des Moines Water Works

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

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
20150.200 ppb62ND - 0.700 ppb
20160.367 ppb63ND - 0.900 ppb
20170.140 ppb51ND - 0.700 ppb
20180.458 ppb126ND - 1.40 ppb
20190.300 ppb73ND - 0.800 ppb

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
2014-01-212028503ND
2014-04-072042946ND
2014-07-092060882ND
2014-10-082085404ND
2014-10-082084996ND
2015-01-14OE2100220.500 ppb
2015-04-02OE226853ND
2015-07-09OE2653100.700 ppb
2015-07-13OE266315ND
2015-08-10OE277679ND
2015-10-06OE302468ND
2016-01-14OE3357470.900 ppb
2016-04-04OE3616350.500 ppb
2016-07-07OE398069ND
2016-09-30OE435256ND
2016-09-30OE435255ND
2016-10-19OE4431210.800 ppb
2017-01-13OE4703790.700 ppb
2017-04-11OE500201ND
2017-07-10OE534403ND
2017-10-19OE580193ND
2017-12-15OE601645ND
2018-02-07OE619537ND
2018-04-09OE642876ND
2018-07-09OE680202ND
2018-07-11OE681739ND
2018-07-16OE683859ND
2018-10-08OE724008ND
2018-10-09OE7246030.500 ppb
2018-11-01OE7350121.40 ppb
2018-11-01OE7350150.900 ppb
2018-11-01OE7350140.900 ppb
2018-11-01OE7350090.700 ppb
2018-11-01OE7350041.10 ppb
2019-02-05OE7680130.700 ppb
2019-05-07OE804374ND
2019-07-09OE831885ND
2019-07-16OE835743ND
2019-08-06OE8457570.800 ppb
2019-08-21OE854920ND
2019-11-11OE8919210.600 ppb