Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

Harris County Municipal Utility District 144

NOTE: Harris County Municipal Utility District 144 purchases water from West Harris County Regional Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by West Harris County Regional Water Authority.

1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.

 

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

EWG Health Guideline: 1 ppb

The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

NOTE: Harris County Municipal Utility District 144 purchases water from West Harris County Regional Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by West Harris County Regional Water Authority.

Date Lab ID Result