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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Montgomery 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

 

47

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND80ND
2015ND80ND
2016ND80ND
2017ND80ND
2018ND80ND
2019ND70ND

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
2014-08-04AK86531ND
2014-08-04AK86532ND
2014-08-05AK86536ND
2014-08-05AK86534ND
2014-08-05AK86535ND
2014-08-05AK86533ND
2014-08-05AK86537ND
2014-08-05AK86538ND
2015-09-01AL32932ND
2015-09-01AL32937ND
2015-09-01AL32936ND
2015-09-01AL32935ND
2015-09-01AL32934ND
2015-09-01AL32933ND
2015-09-01AL32931ND
2015-09-01AL32930ND
2016-09-15AL84118ND
2016-09-15AL84119ND
2016-09-15AL84120ND
2016-09-15AL84114ND
2016-09-15AL84113ND
2016-09-15AL84117ND
2016-09-15AL84115ND
2016-09-15AL84116ND
2017-09-12AM37128ND
2017-09-12AM37127ND
2017-09-12AM37133ND
2017-09-12AM37130ND
2017-09-12AM37126ND
2017-09-12AM37131ND
2017-09-12AM37132ND
2017-09-12AM37129ND
2018-06-05AM77000ND
2018-06-05AM76999ND
2018-06-05AM77001ND
2018-06-06AM77005ND
2018-06-06AM77003ND
2018-06-06AM77002ND
2018-06-06AM77004ND
2018-06-06AM77006ND
2019-07-24AN36649ND
2019-07-24AN36651ND
2019-07-24AN36648ND
2019-07-24AN36647ND
2019-07-24AN36653ND
2019-07-24AN36650ND
2019-07-24AN36652ND