Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Loyal 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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021N/A00N/A
2022N/A00N/A
20230.436 ppb52ND - 1.30 ppb

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
2018-08-0918H0421-01ND
2019-07-3019G1067-01ND
2020-04-2320D0780-02ND
2020-04-2320D0780-03ND
2020-04-2320D0780-01ND
2020-04-2320D0780-04ND
2023-05-0823E0244-05ND
2023-05-0823E0244-04ND
2023-05-0823E0244-02ND
2023-05-0823E0244-011.30 ppb
2023-11-0623K0168-010.880 ppb