Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Bear Valley Joint Authority

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND30ND
2020ND40ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-05-29(102)ND
2018-07-17(102)ND
2018-10-16(101) TREATMND
2018-11-27(102)ND
2019-02-19(102)ND
2019-11-069K07106-01ND
2019-12-179L18235-01ND
2020-01-2921624694.00ND
2020-04-1522165869.00ND
2020-07-2922750945.00ND
2020-09-2323137058.00ND
2021-09-2825358594.00ND
2021-09-2825358627.00ND
2022-09-1427594682.00ND
2022-10-1327779633.00ND
2023-09-0629840898.00ND
2023-09-0629840932.00ND