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EWG's Tap Water Database — 2021 UPDATE

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1,1,2,2-Tetrachloroethane

Parkhouse

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND40ND
2016ND40ND
2017ND30ND
2018ND10ND
2019ND10ND

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
2014-04-02L4974224-1ND
2014-04-28L5026034-1ND
2014-11-07L5300357-1ND
2015-01-2912285062ND
2015-04-0112631024ND
2015-07-2213010806ND
2015-10-0913387351ND
2016-02-1913868710ND
2016-05-0414248965ND
2016-09-0714906198ND
2016-10-1915073682ND
2017-01-1715515368ND
2017-05-1916255566ND
2017-07-2116411255ND
2018-05-23L6992345-1ND
2019-05-09L7110022-1ND