Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

City of Shavano Park

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND40ND
2023ND40ND

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
2018-03-02AE16674ND
2018-03-02AE16676ND
2018-03-02AE16700ND
2018-03-02AE16668ND
2019-04-03AE61029ND
2019-04-03AE61035ND
2019-04-03AE61039ND
2019-04-03AE61047ND
2020-02-24AE99519ND
2020-02-24AE99539ND
2020-02-24AE99541ND
2020-05-15AF11875ND
2021-02-23AF43941ND
2021-02-23AF43945ND
2021-02-23AF43943ND
2021-06-18AF58893ND
2022-03-09AF88394ND
2022-03-09AF88406ND
2022-03-09AF88408ND
2022-03-09AF88412ND
2023-06-22AG45585ND
2023-06-22AG45593ND
2023-06-22AG45601ND
2023-06-22AG45603ND