Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Brunswick / Topsham Water District

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021ND10ND
2022ND20ND
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
2018-04-181804-01967-001ND
2019-05-151905-01974-001ND
2020-05-042005-00167-002ND
2020-05-042005-00164-002ND
2020-05-042005-00161-002ND
2021-08-312108-05047-001ND
2022-07-182207-03089-001ND
2022-07-21402201615-TSNND
2023-05-022305-00382-001ND
2023-05-022305-00379-001ND
2023-06-202306-04105-001ND