Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Harris County Municipal Utility District 136

NOTE: Harris County Municipal Utility District 136 purchases water from West Harris County Regional Water Authority which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by West Harris County Regional 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.

 

0

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
2023ND10ND

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

NOTE: Harris County Municipal Utility District 136 purchases water from West Harris County Regional Water Authority which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by West Harris County Regional Water Authority.

Date Lab ID Result