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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

City of Highland Village

1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.

MORE ABOUT THIS CONTAMINANT

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
2016ND80ND
2017ND50ND
2018ND50ND
2019ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppb

The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-18Q1437308024ND
2014-08-18Q1437308022ND
2014-08-18Q1437308020ND
2014-08-18Q1437308019ND
2014-08-18Q1437308010ND
2015-06-09Q1521357009ND
2015-06-09Q1521357008ND
2015-08-13Q1532069009ND
2015-08-13Q1532069005ND
2015-08-13Q1532069006ND
2016-03-16Q1611305003ND
2016-06-07Q1622614016ND
2016-06-07Q1622614004ND
2016-06-07Q1622614001ND
2016-06-27Q1625972004ND
2016-06-27Q1625972002ND
2016-09-02Q1635674005ND
2016-10-19Q1644917003ND
2017-06-15Q1725217002ND
2017-06-15Q1725217024ND
2017-06-15Q1725217022ND
2017-06-15Q1725217021ND
2017-10-12Q1752251006ND
2018-06-13Q1823500010ND
2018-06-13Q1823500007ND
2018-06-13Q1823500005ND
2018-06-13Q1823500003ND
2018-06-13Q1823500001ND
2019-08-08Q1953062020ND
2019-08-08Q1953062028ND
2019-08-08Q1953062026ND
2019-08-08Q1953062024ND
2019-08-08Q1953062022ND