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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

City of Mountain Home

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND30ND
2016ND20ND
2017ND10ND
2018N/A00N/A
2019ND20ND

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
2014-07-01V1424601ND
2014-07-01V1424597ND
2015-03-11V1509330ND
2015-04-08V1513098ND
2015-12-17V1554310ND
2016-08-23V1638144ND
2016-08-23V1638147ND
2017-12-20V1759182ND
2019-06-11V1927644ND
2019-06-11V1927642ND