Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

City of Stamford

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

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND20ND
2023ND30ND

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
2018-09-19Q1837653003ND
2019-08-22Q1958561001ND
2020-09-14Q2036319001ND
2021-09-07Q2124175003ND
2022-09-08Q2226788002ND
2022-11-29Q2235396003ND
2023-03-14Q2310046005ND
2023-05-17Q2318614001ND
2023-09-06Q2338453001ND