Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

City of Opelousas Water System

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND100ND
2019N/A00N/A
2020ND20ND
2021ND40ND
2022N/A00N/A
2023ND60ND

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
2018-01-0935367792002ND
2018-01-0935367792003ND
2018-01-0935367792004ND
2018-01-0935367792005ND
2018-01-0935367792001ND
2018-01-0935367792002ND
2018-01-0935367792003ND
2018-01-0935367792004ND
2018-01-0935367792005ND
2018-01-0935367792001ND
2020-08-1735571769002ND
2020-08-1735571769001ND
2021-01-1935606222002ND
2021-01-1935606222003ND
2021-01-1935606222004ND
2021-01-1935606222005ND
2023-08-2835823882001ND
2023-08-2835823882002ND
2023-08-2835823882003ND
2023-08-2835823882004ND
2023-08-2835823882005ND
2023-08-2835823882006ND