Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Water Authority of Dickson County

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
2018ND30ND
2019ND30ND
2020ND30ND
2021ND150ND
2022ND170ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-03-07ND
2018-03-07ND
2018-03-07ND
2019-04-03ND
2019-04-03ND
2019-04-03ND
2020-02-04ND
2020-02-04ND
2020-02-05ND
2021-01-06ND
2021-02-03ND
2021-03-03ND
2021-03-03ND
2021-04-07ND
2021-04-07ND
2021-04-07ND
2021-05-05ND
2021-06-22ND
2021-07-07ND
2021-08-03ND
2021-09-09ND
2021-10-06ND
2021-11-03ND
2021-12-08ND
2022-01-05ND
2022-01-05ND
2022-02-02ND
2022-02-02ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-03-02ND
2022-03-02ND
2022-04-06ND
2022-05-11ND
2022-06-08ND
2022-07-06ND
2022-08-03ND
2023-04-12ND
2023-04-12ND
2023-04-12ND