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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

Perkasie Regional Authority

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

MORE ABOUT THIS CONTAMINANT

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND110ND
2015ND110ND
2016ND110ND
2017ND100ND
2018N/A00N/A
2019N/A00N/A

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
2014-03-11L2515685-1ND
2014-03-11L2515685-2ND
2014-06-10L5101092-11ND
2014-06-10L5101092-12ND
2014-09-09L5170431-1ND
2014-09-09L5170431-5ND
2014-09-09L5170431-4ND
2014-09-09L5170431-2ND
2014-09-09L5170431-3ND
2014-12-09L5292845-2ND
2014-12-09L5292845-1ND
2015-03-1012501697ND
2015-03-1012501751ND
2015-06-0912867686ND
2015-06-0912867740ND
2015-09-0813250334ND
2015-09-0813250280ND
2015-09-0813250226ND
2015-09-0813250118ND
2015-09-0813250172ND
2015-12-0813619709ND
2015-12-0813619655ND
2016-03-0813972805ND
2016-03-0813972753ND
2016-06-0714389122ND
2016-06-0714389070ND
2016-09-1314889624ND
2016-09-1314889676ND
2016-09-1314889520ND
2016-09-1314889572ND
2016-09-1314889468ND
2016-12-0615356082ND
2016-12-0615356030ND
2017-03-0715780188ND
2017-03-0715780136ND
2017-06-0616240813ND
2017-06-0616240761ND
2017-09-0516711026ND
2017-09-0516710974ND
2017-09-0516710922ND
2017-09-0516711078ND
2017-12-0517146869ND
2017-12-0517146817ND