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EWG's Tap Water Database — 2021 UPDATE

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1,1,2,2-Tetrachloroethane

Bradley Waterworks

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND20ND
2017ND50ND
2018ND60ND
2019ND50ND

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
2014-08-2514240005802ND
2015-04-2915120000301ND
2015-07-0715190007702ND
2016-07-0516189007309ND
2016-11-2116327002904ND
2017-02-0617039001508ND
2017-04-1717109003009ND
2017-08-0117215004202ND
2017-08-0117215004108ND
2017-10-2317299001501ND
2018-02-1218046000301ND
2018-05-2918151004201ND
2018-05-2918151004301ND
2018-08-1318228002901ND
2018-08-1318228002702ND
2018-10-1618291005301ND
2019-02-2519059000701ND
2019-05-1319136008101ND
2019-07-3119213001508ND
2019-07-3119213001601ND
2019-11-0519311002301ND