Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Conyngham Water Company

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND50ND
2021ND30ND
2022ND30ND
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
2018-04-177048808001ND
2018-04-177048808002ND
2018-04-177048808003ND
2019-03-121903-156-2ND
2019-03-1219030-156-1ND
2019-03-121903-156-1ND
2020-03-0221862231.00ND
2020-03-0221862211.00ND
2020-03-0221862191.00ND
2020-03-0221862171.00ND
2020-03-0221862151.00ND
2021-06-0124454891.00ND
2021-06-0124454871.00ND
2021-06-0124454911.00ND
2022-04-0426478818.00ND
2022-04-0426478838.00ND
2022-04-0426478858.00ND
2023-03-0628536376.00ND
2023-03-0628536396.00ND
2023-03-0628536416.00ND
2023-12-1230259326.00ND
2023-12-1230259306.00ND