Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Cottonwood Hills Estates

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
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-02-13Q1805887001ND
2018-02-13Q1805887003ND
2019-03-05Q1909164001ND
2019-03-05Q1909164003ND
2020-02-12Q2005781001ND
2020-06-25Q2025625001ND
2021-06-16Q2115846002ND
2021-06-16Q2115846004ND
2022-03-22Q2209180012ND
2022-03-22Q2209180014ND
2023-02-21Q2307018001ND
2023-12-04Q2351632001ND