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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Tonopah Public Utilities

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016ND30ND
2017N/A00N/A
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
2014-02-031402849-01-VND
2014-02-041402845-01-VND
2015-08-03A5H0479-02ND
2015-08-03A5H0479-01ND
2016-06-061616119-01ND
2016-07-121619412-01ND
2016-10-25EN2016-00005708ND
2019-06-10A9F1990-01ND
2019-06-10A9F1990-02ND