Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

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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
2018ND40ND
2019ND40ND
2020ND30ND
2021ND40ND
2022ND40ND
2023ND40ND

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
2018-03-14371423001ND
2018-05-29385147001ND
2018-08-22403173001ND
2018-10-23199879ND
2019-03-20436653001ND
2019-06-24453752001ND
2019-08-19464655001ND
2019-12-18487030001ND
2020-05-121188026ND
2020-09-241219644ND
2020-10-211225956ND
2021-01-281238946ND
2021-04-191250918ND
2021-09-011276129ND
2021-11-081289483ND
2022-03-145040671AND
2022-04-055040801AND
2022-07-2652025291ND
2022-10-1152036553ND
2023-03-2353012772ND
2023-05-1053019602ND
2023-07-1953028169ND
2023-10-0453038727ND