Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Jefferson Water Department

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.55 ppb221.47 ppb - 1.63 ppb
20190.690 ppb110.690 ppb
20201.32 ppb111.32 ppb
20210.790 ppb21ND - 1.58 ppb
20222.06 ppb112.06 ppb
20231.20 ppb111.20 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
2018-04-021D80162-011.63 ppb
2018-10-091J80834-011.47 ppb
2019-10-011J90156-020.690 ppb
2020-10-271J02372-021.32 ppb
2021-05-051EE0485-02ND
2021-11-171EK1798-021.58 ppb
2022-11-011FK0412-012.06 ppb
2023-11-301GK1979-011.20 ppb