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EWG's Tap Water Database — 2021 UPDATE

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1,1,2,2-Tetrachloroethane

Colchester Commons

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND30ND
2016ND20ND
2017ND20ND
2018ND30ND
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
2014-02-19BG10471VOC1ND
2014-02-19BG10470VOC1ND
2014-04-18BG34476VOC1ND
2014-04-18BG34477VOC1ND
2014-07-29BG83659VOC1ND
2014-07-29BG83661VOC1ND
2014-10-16BH28215VOC1ND
2014-10-16BH28216VOC1ND
2015-04-24BJ07685VOC1ND
2015-04-24BJ07684VOC1ND
2015-04-24BJ07683VOC1ND
2016-03-24BK87904VOC1ND
2016-03-24BK87906VOC1ND
2017-04-07BY00694VOC1ND
2017-10-10BZ18334VOC1ND
2018-04-27CA37955VOC1ND
2018-04-27CA37956VOC1ND
2018-04-27CA37957VOC1ND
2019-10-21CE44554ND
2019-10-21CE44556ND