Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Bryan County Rural Water District #9

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND40ND
2020ND20ND
2021ND10ND
2022ND40ND
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
2019-02-05SDWA-1348197-00ND
2019-03-20SDWA-1361036-00ND
2019-07-29SDWA-1392189-00ND
2019-10-21SDWA-1424852-00ND
2020-01-27SDWA-1456770-00ND
2020-08-17SDWA-1506236-00ND
2021-03-16SDWA-1554024-00ND
2022-01-19SDWA-1662225-00ND
2022-05-02SDWA-1693891-00ND
2022-09-15SDWA-1711575-00ND
2022-11-14SDWA-1744625-00ND
2023-02-06SDWA-1766601-00ND
2023-02-06SDWA-1766608-00ND
2023-02-06SDWA-1766614-00ND
2023-02-06SDWA-1766620-00ND
2023-04-03SDWA-1789829-00ND
2023-07-24SDWA-1815392-00ND