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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

Stratford Harbour

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

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND120ND
2016ND120ND
2017ND30ND
2018ND30ND
2019ND20ND

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
2014-01-1424444101ND
2014-01-1424444301ND
2014-01-1424443901ND
2014-04-2125150301ND
2014-04-2125150101ND
2014-04-2125150201ND
2014-07-2126415201ND
2014-07-2126415501ND
2014-07-2126415301ND
2014-10-1427194101ND
2014-10-1427193901ND
2014-10-1427194001ND
2015-01-2900001_EXP-AMERICND
2015-01-2900001_EXP-AMERICND
2015-01-2900001_EXP-AMERICND
2015-04-2800001_EXP-AMERICND
2015-04-2800001_EXP-AMERICND
2015-04-2800001_EXP-AMERICND
2015-07-13460274-AMERICANND
2015-07-13460274-AMERICANND
2015-07-13460274-AMERICANND
2015-10-14460274-AMERICANND
2015-10-14460274-AMERICANND
2015-10-14460274-AMERICANND
2016-01-2831010401ND
2016-01-2831010601ND
2016-01-2831010801ND
2016-04-1931607101ND
2016-04-1931607201ND
2016-06-2931607301ND
2016-07-1932660801ND
2016-07-1932660701ND
2016-07-1932661001ND
2016-10-2433420101ND
2016-10-2433420001ND
2016-10-2433419901ND
2017-01-3034239801ND
2017-01-3034239601ND
2017-01-3034239401ND
2018-01-1638195401ND
2018-01-1638195501ND
2018-01-1638195701ND
2019-01-2842534701-VOCND
2019-01-2842534801-VOCND