Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Quincy Water Department City Of

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.

 

13

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
2019ND10ND
2020N/A00N/A
2021ND20ND
2022ND70ND
2023ND30ND

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
2019-10-02ND
2021-06-164132530ND
2021-06-164131878ND
2022-03-044258466ND
2022-03-224258506ND
2022-08-164338187ND
2022-08-164338185ND
2022-09-134344891ND
2022-10-064356344ND
2022-10-064356345ND
2023-03-094427806ND
2023-09-264526082ND
2023-10-034526155ND