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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Palmer Water District No.1

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND70ND
20130.135 ppb133ND - 0.680 ppb
20140.212 ppb92ND - 0.980 ppb
20151.15 ppb51ND - 5.76 ppb
20162.46 ppb51ND - 12.3 ppb
20176.04 ppb51ND - 30.2 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 Result
2012-07-18ND
2012-07-18ND
2012-07-18ND
2012-07-18ND
2012-07-18ND
2012-12-11ND
2012-12-11ND
2013-03-11ND
2013-03-11ND
2013-05-13ND
2013-05-13ND
2013-07-090.500 ppb
2013-07-09ND
2013-09-170.570 ppb
2013-09-17ND
2013-09-17ND
2013-09-17ND
2013-09-17ND
2013-12-10ND
2013-12-100.680 ppb
2014-02-180.930 ppb
2014-02-18ND
2014-09-24ND
2014-09-24ND
2014-09-24ND
2014-09-24ND
2014-09-24ND
2014-11-240.980 ppb
2014-11-24ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-105.76 ppb
2015-08-10ND
2016-08-09ND
2016-08-09ND
2016-08-09ND
2016-08-0912.3 ppb
2016-08-09ND
2017-11-1530.2 ppb
2017-11-15ND
2017-11-15ND
2017-11-15ND
2017-11-15ND