Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Stanley Lake Municipal Utility District

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND40ND
2021ND40ND
2022ND60ND
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
2018-02-20AE14459ND
2018-02-20AE14433ND
2019-03-04AE56885ND
2019-03-04AE56889ND
2020-08-11AF22868ND
2020-08-11AF22870ND
2020-08-11AF22872ND
2020-11-20AF35494ND
2021-01-14AF39546ND
2021-01-14AF39560ND
2021-01-14AF39570ND
2021-04-14AF50172ND
2022-08-04AG07883ND
2022-08-04AG07885ND
2022-08-04AG07889ND
2022-08-04AG07891ND
2022-10-18AG17399ND
2022-10-18AG17401ND
2023-01-25AG26238ND
2023-01-25AG26240ND
2023-01-25AG26244ND
2023-01-25AG26258ND
2023-04-10AG36106ND