Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

City of Overton

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

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
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
2018-03-13Q1810105002ND
2018-03-13Q1810105003ND
2018-06-11Q1823066006ND
2019-04-15Q1914977001ND
2019-04-15Q1914977004ND
2020-05-14Q2019538003ND
2020-05-14Q2019538005ND
2021-05-03Q2111069004ND
2021-10-21Q2129818002ND
2022-06-27Q2217839002ND
2022-06-27Q2217839004ND
2023-05-25Q2319666002ND
2023-05-25Q2319666004ND