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EWG's Tap Water Database — 2021 UPDATE

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1,1,2,2-Tetrachloroethane

Cypress Springs SUD N Plant 1 and NE Plant

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
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2014-09-17Q1445247004ND
2014-09-17Q1445247006ND
2015-09-22Q1537064011ND
2015-09-22Q1537064010ND
2016-09-21Q1639244001ND
2016-09-21Q1639244004ND
2017-08-17Q1736889002ND
2017-08-17Q1736889004ND
2018-08-20Q1833137001ND
2018-08-20Q1833137004ND
2019-09-19Q1966997001ND
2019-09-19Q1966997003ND