Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

Northeast Knox U D

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
2018ND40ND
2019ND40ND
2020ND10ND
2021ND30ND
2022ND50ND
2023ND50ND

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
2018-01-17ND
2018-04-12ND
2018-07-11ND
2018-10-16ND
2019-01-15ND
2019-04-09ND
2019-07-16ND
2019-10-17ND
2020-01-15ND
2021-01-21ND
2021-05-20ND
2021-08-19ND
2022-01-20ND
2022-01-20ND
2022-04-21ND
2022-07-19ND
2022-10-17ND
2023-01-17ND
2023-01-17ND
2023-01-17ND
2023-04-19ND
2023-10-17ND