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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

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1,1,1-Trichloroethane is a solvent and a degreasing agent used for manufacturing metal products and as ingredient in cleaners and aerosols. Exposure to 1,1,1-trichloroethane can harm the nervous system, liver and circulatory system.

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
2014ND80ND
2015ND80ND
2016ND80ND
2017ND80ND
2018ND40ND
2019ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 200 ppb

The legal limit for 1,1,1-trichloroethane, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-0824405801ND
2014-01-0824405701ND
2014-04-0225334601ND
2014-04-0225334501ND
2014-07-0926110301ND
2014-07-0926110201ND
2014-10-0127098701ND
2014-10-0127098801ND
2015-01-0712297072ND
2015-01-0712297051ND
2015-04-1512642921ND
2015-04-1512642900ND
2015-07-1513023159ND
2015-07-1513023138ND
2015-10-0613399417ND
2015-10-0613399438ND
2016-01-0513763236ND
2016-01-0513763257ND
2016-04-0514115629ND
2016-04-0514115650ND
2016-07-0114583663ND
2016-07-0114583684ND
2016-10-0515088561ND
2016-10-0515088540ND
2017-01-0515529626ND
2017-01-0515529647ND
2017-04-0515950747ND
2017-04-0515950768ND
2017-07-0716426350ND
2017-07-0716426371ND
2017-10-0516892551ND
2017-10-0516892572ND
2018-01-1038158601ND
2018-04-0439069901ND
2018-07-0340201501ND
2018-10-0441308901ND
2019-01-0942495701ND
2019-04-1043656201ND
2019-07-1645013801ND
2019-10-1046829601ND