Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

South Middleton Twp Water Authority

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND90ND
2022ND90ND
2023ND60ND

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
2018-05-158052993-01ND
2018-05-158052993-02ND
2018-05-158052993-03ND
2019-05-149052836-02ND
2019-05-149052836-03ND
2019-05-149052836-01ND
2020-05-1422355423.00ND
2020-05-1422355402.00ND
2020-05-1422355381.00ND
2021-02-1724007056.00ND
2021-02-1724007008.00ND
2021-02-1724007032.00ND
2021-05-1824579635.00ND
2021-05-1824579684.00ND
2021-05-1824579660.00ND
2021-08-1725164852.00ND
2021-08-1725164901.00ND
2021-08-1725164877.00ND
2022-05-1726788402.00ND
2022-05-1726788451.00ND
2022-05-1726788427.00ND
2022-08-2327587394.00ND
2022-08-2327587395.00ND
2022-08-2327587393.00ND
2022-11-1627948229.00ND
2022-11-1627948253.00ND
2022-11-1627948204.00ND
2023-03-3028650586.00ND
2023-03-3028650635.00ND
2023-03-3028650611.00ND
2023-05-2529247748.00ND
2023-05-2529247747.00ND
2023-05-2529247746.00ND