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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

Cliffs At Keowee (sc3950009)

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
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND60ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2018-06-06AE13255ND
2018-06-06AE13257ND
2018-08-07AE16291ND
2018-08-07AE16306ND
2018-10-31AE20622ND
2018-10-31AE20642ND
2019-01-17AE24327ND
2019-01-17AE24328ND