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EWG's Tap Water Database — 2021 UPDATE

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1,1,2,2-Tetrachloroethane

UC - Davis

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND20ND
2016N/A00N/A
2017ND60ND
2018N/A00N/A
2019N/A00N/A

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
2014-03-255810-026-1050ND
2014-05-205810-026-0650ND
2014-09-045810-001-0742ND
2014-09-045810-002-0929ND
2014-09-045810-004-0953ND
2014-09-045810-015-1305ND
2014-09-045810-026-0850ND
2015-02-195810-014-1030ND
2015-03-245810-026-0900ND
2017-09-275810-001-1040ND
2017-09-275810-002-1225ND
2017-09-275810-004-1020ND
2017-09-275810-014-1205ND
2017-09-275810-015-0940ND
2017-09-275810-026-1005ND