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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

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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
2014ND10ND
2015ND20ND
2016ND10ND
2017ND10ND
2018ND20ND
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
2014-09-193409-1660ND
2015-08-133508-1325-1ND
2015-08-203508-2067-1ND
2016-08-243608-2438-1ND
2017-09-123709-992-1ND
2018-05-09118051074.01ND
2018-08-31118083429.01ND
2019-09-23119092469.01ND
2019-11-20119112063.01ND