Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Alpine Lakes Ranch 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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND10ND
2021ND10ND
2022ND90ND
2023ND30ND

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 Result
2018-08-07ND
2018-08-28ND
2019-08-13ND
2019-09-24ND
2020-11-11ND
2021-09-02ND
2022-02-21ND
2022-02-21ND
2022-05-09ND
2022-05-09ND
2022-07-21ND
2022-07-21ND
2022-11-17ND
2022-11-22ND
2022-11-22ND
2023-02-13ND
2023-02-13ND
2023-08-01ND