Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Rothschild Waterworks

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND50ND
2020ND20ND
2021ND10ND
2022ND10ND
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
2018-03-131044837ND
2018-06-191062274ND
2018-06-191062272ND
2018-09-111079505ND
2018-11-131092763ND
2019-04-231116903ND
2019-05-071119529ND
2019-08-271144005ND
2019-08-271144003ND
2019-10-291157914ND
2020-08-101205736ND
2020-08-101205729ND
2021-08-031269115ND
2022-07-191324684ND
2023-05-22CB05354-03ND
2023-08-28CB10306-02ND