Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Rio Brazos Water Supply Corporation

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 70 ppb

The legal limit for cis-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
2018-09-24Q1838018007ND
2018-09-24Q1838018008ND
2019-09-23Q1967408003ND
2019-09-23Q1967408008ND
2020-08-03Q2030183001ND
2020-08-03Q2030183003ND
2021-03-31Q2108168006ND
2021-03-31Q2108168008ND
2022-11-30Q2235879002ND
2022-11-30Q2235879004ND
2023-06-08Q2321728001ND
2023-06-08Q2321728011ND
2023-08-17Q2334702001ND
2023-12-15Q2354044001ND