Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

City of Plaquemine 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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20190.146 ppb104ND - 0.380 ppb
2020ND40ND
20210.605 ppb440.440 ppb - 0.910 ppb
20220.216 ppb52ND - 0.690 ppb
20230.295 ppb42ND - 0.690 ppb

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
2019-05-2035469857001ND
2019-05-2035469857002ND
2019-05-2035469857001ND
2019-05-2035469857002ND
2019-05-21354705000010.350 ppb
2019-05-21354705000020.380 ppb
2019-05-21354705000010.350 ppb
2019-05-21354705000020.380 ppb
2019-06-1235475393005ND
2019-06-1235475393005ND
2020-06-0135554093004ND
2020-06-0135554093003ND
2020-06-0135554093002ND
2020-06-0135554093001ND
2021-05-25356361580010.440 ppb
2021-05-25356361580020.550 ppb
2021-05-25356361580030.910 ppb
2021-05-25356361580040.520 ppb
2022-05-1635718662001ND
2022-05-16357186620020.390 ppb
2022-05-16357186620030.690 ppb
2022-05-1635718662004ND
2022-05-1635718662005ND
2023-10-3035838246001ND
2023-10-3035838246002ND
2023-10-30358382460030.490 ppb
2023-10-30358382460040.690 ppb