Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

St Bernard Parish Waterworks

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
2018ND20ND
2019ND20ND
2020ND20ND
2021ND10ND
2022ND10ND
2023ND10ND

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 Lab ID Result
2018-03-0635378295001ND
2018-03-0635378295001ND
2019-02-1435448755001ND
2019-02-1435448755001ND
2020-03-1035536678001ND
2020-11-1835593411001ND
2021-03-0935617728001ND
2022-02-0935696480001ND
2023-02-0835778323001ND