Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

Collierville Water Department

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

 

22

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
2019ND20ND
2020N/A00N/A
2021ND30ND
2022ND90ND
2023ND80ND

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 Result
2019-04-15ND
2019-04-15ND
2021-03-18ND
2021-03-18ND
2021-03-18ND
2022-04-20ND
2022-04-20ND
2022-08-11ND
2022-08-11ND
2022-08-11ND
2022-10-19ND
2022-10-19ND
2022-10-19ND
2022-10-19ND
2023-09-13ND
2023-09-13ND
2023-09-13ND
2023-09-13ND
2023-10-17ND
2023-10-17ND
2023-12-11ND
2023-12-11ND