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EWG's Tap Water Database — 2021 UPDATE

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1,1,1,2-Tetrachloroethane

Hazardville Water Company

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

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015ND50ND
2016ND50ND
2017ND90ND
2018ND60ND
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
2014-01-27SB83819-04-VOCND
2014-04-21SB87957-13-VOCND
2014-04-21SB87957-14-VOCND
2014-06-03SB90449-01-VOCND
2014-06-03SB90449-02-VOCND
2014-06-03SB90449-03-VOCND
2014-06-03SB90449-04-VOCND
2014-06-03SB90449-05-VOCND
2014-07-07SB92334-09-VOCND
2014-10-14SB97999-04-VOCND
2015-02-11SC03254-05-VOCND
2015-04-21SC06241-06-VOCND
2015-07-15SC10036-04-VOCND
2015-09-08SC12125-03-VOCND
2015-10-20SC13895-08-VOCND
2016-01-25SC17491-09-VOCND
2016-04-18SC20279-09-VOCND
2016-07-21SC23917-03-VOCND
2016-07-21SC23917-02-VOCND
2016-10-24SC27464-08-VOCND
2017-01-09SC30330-15-VOCND
2017-04-04BX98286VOC1ND
2017-06-26BY48752VOC1ND
2017-06-26BY48750VOC1ND
2017-06-27BY48751VOC1ND
2017-06-27BY48749VOC1ND
2017-06-27BY48754VOC1ND
2017-07-25BY72105VOC1ND
2017-10-17BZ22379VOC1ND
2018-01-03BZ68303VOC1ND
2018-04-03CA12985VOC1ND
2018-07-02CA82194ND
2018-07-02CA82195ND
2018-07-02CA82195VOC1ND
2018-10-10CB69247ND
2019-01-07CC25226ND
2019-04-02CC79783ND
2019-07-09CD52639ND
2019-07-09CD52640ND
2019-10-08CE28924ND