Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

East Montgomery County MUD 4

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

 

10

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
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022ND80ND
2023ND20ND

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

Date Lab ID Result
2022-03-08AF88066ND
2022-03-08AF88068ND
2022-04-13AF93154ND
2022-04-13AF93156ND
2022-07-11AG04066ND
2022-07-11AG04068ND
2022-10-18AG17488ND
2022-10-18AG17492ND
2023-05-10AG40023ND
2023-05-10AG40033ND