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EWG's Tap Water Database — 2019 UPDATE

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1,1,2,2-Tetrachloroethane

Lafayette

1,1,2,2-Tetrachloroethane is an industrial chemical which has been used as a metal degreaser, and in paint, paint removers, mothballs and pesticides. It damages the liver and nervous system, and may cause cancer.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for 1,1,2,2-tetrachloroethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2012-05-08AH59996ND
2012-05-08AH59995ND
2013-05-21AI02051ND
2013-05-21AI02050ND
2014-05-14AI40539ND
2014-05-14AI40538ND
2015-04-07AI74280ND
2015-04-07AI74279ND
2016-05-11AJ12003ND
2016-05-11AJ12002ND
2017-06-21AJ58196ND
2017-06-21AJ58195ND