Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Columbia Water Company

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021ND10ND
2022ND10ND
2023ND40ND

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
2018-04-022306480001ND
2019-04-109042204-01ND
2020-04-0722172645.00ND
2020-04-0722172666.00ND
2020-04-1322172767.00ND
2020-04-2322173047.00ND
2021-04-1224395228.00ND
2022-04-1126608856.00ND
2023-03-0628662964.00ND
2023-04-0328859657.00ND
2023-04-1729061112.00ND
2023-04-1728859827.00ND