Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Paw Blue Mountain Division

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND50ND
2021ND40ND
2022ND40ND
2023ND50ND

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
2018-01-1038160101ND
2019-01-0942498201ND
2019-07-1645238801ND
2020-04-2222086240.00ND
2020-04-2922086549.00ND
2020-04-2922086570.00ND
2020-05-1122278293.00ND
2020-05-1122278314.00ND
2021-04-1224308439.00ND
2021-04-1224308460.00ND
2021-07-2124889775.00ND
2021-07-2124889796.00ND
2022-04-1826522966.00ND
2022-04-1826522987.00ND
2022-08-0327300376.00ND
2022-08-0427300338.00ND
2023-04-1028766768.00ND
2023-04-1028766730.00ND
2023-04-1128766711.00ND
2023-04-1128766699.00ND
2023-06-0729172446.00ND