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EWG's Tap Water Database

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1,1,1,2-Tetrachloroethane

Homer

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011ND20ND
2012ND10ND
2013ND40ND
2014ND60ND
2015ND10ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 1 ppb

The 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
2011-02-07AH18797ND
2011-02-07AH18796ND
2012-10-09AH81324ND
2013-01-14AH87341ND
2013-04-15AH99049ND
2013-07-08AI05571ND
2013-10-08AI20240ND
2014-01-08AI26178ND
2014-01-08AI26177ND
2014-01-08AI26176ND
2014-04-14AI37968ND
2014-07-08AI45055ND
2014-10-16AI57749ND
2015-01-12AI62652ND