Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Swta - Main System

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.

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND50ND
2020ND70ND
2021ND50ND
2022ND50ND
2023ND70ND

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
2018-01-098012152-02ND
2018-04-108042613-02ND
2018-04-108042612-01ND
2018-04-108042612-02ND
2018-04-108042612-03ND
2018-04-108042612-04ND
2019-04-239044997-01ND
2019-04-239044997-02ND
2019-04-239044997-03ND
2019-04-239044997-04ND
2019-04-239044997-05ND
2020-04-1422080220.00ND
2020-04-1422080283.00ND
2020-04-1422080199.00ND
2020-04-1422080178.00ND
2020-04-1422080157.00ND
2020-04-1422080241.00ND
2020-04-1422080262.00ND
2021-04-0624301753.00ND
2021-04-0624301816.00ND
2021-04-0624301774.00ND
2021-04-0624301795.00ND
2021-04-0624301837.00ND
2022-05-3126899451.00ND
2022-05-3126899514.00ND
2022-05-3126899472.00ND
2022-05-3126899493.00ND
2022-05-3126899535.00ND
2023-04-0428761093.00ND
2023-04-0428761090.00ND
2023-04-0428761095.00ND
2023-04-0428761094.00ND
2023-04-0428761092.00ND
2023-04-0428761091.00ND
2023-12-1230296275.00ND