Know Your Environment. Protect Your Health.

trans-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

EWG Health Guideline: 60 ppb

The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 100 ppb

The legal limit for trans-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
2020-04-0722172652.00ND
2020-04-0722172673.00ND
2020-04-1322172774.00ND
2020-04-2322173054.00ND
2021-04-1224395235.00ND
2022-04-1126608863.00ND
2023-03-0628662971.00ND
2023-04-0328859672.00ND
2023-04-1729061119.00ND
2023-04-1728859834.00ND