Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

Stanislaus Regional Water Authority

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND10ND
2023N/A00N/A

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
2018-09-12CA5010043_001_001-201809120915ND
2019-03-14CA5010043_001_001-201903140900ND
2019-09-19CA5010043_001_001-201909191030ND
2020-04-16CA5010043_001_001-202004160830ND
2020-09-17CA5010043_001_001-202009170900ND
2021-03-18CA5010043_001_001-202103180820ND
2021-09-16CA5010043_001_001-202109160830ND
2022-04-11CA5010043_001_001-202204110930ND