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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Medfield Water Department

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

 

115

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND330ND
2015ND270ND
2016ND190ND
2017ND120ND
2018ND120ND
2019ND120ND

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 Result
2014-03-05ND
2014-03-05ND
2014-03-05ND
2014-03-24ND
2014-03-24ND
2014-03-24ND
2014-04-02ND
2014-04-02ND
2014-04-02ND
2014-05-21ND
2014-05-21ND
2014-05-21ND
2014-06-18ND
2014-06-18ND
2014-06-18ND
2014-07-16ND
2014-07-16ND
2014-07-16ND
2014-08-06ND
2014-08-06ND
2014-08-06ND
2014-09-03ND
2014-09-03ND
2014-09-03ND
2014-10-01ND
2014-10-01ND
2014-10-01ND
2014-11-05ND
2014-11-05ND
2014-11-05ND
2014-12-03ND
2014-12-03ND
2014-12-03ND
2015-02-27ND
2015-02-27ND
2015-02-27ND
2015-05-06ND
2015-05-06ND
2015-05-06ND
2015-06-03ND
2015-06-03ND
2015-06-03ND
2015-07-15ND
2015-07-15ND
2015-07-15ND
2015-08-05ND
2015-08-05ND
2015-08-05ND
2015-09-02ND
2015-09-02ND
2015-09-02ND
2015-10-21ND
2015-10-21ND
2015-10-21ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2015-12-16ND
2015-12-16ND
2015-12-16ND
2016-01-20ND
2016-01-20ND
2016-01-20ND
2016-02-03ND
2016-02-03ND
2016-02-03ND
2016-03-02ND
2016-03-02ND
2016-03-02ND
2016-05-19ND
2016-06-15ND
2016-06-15ND
2016-06-15ND
2016-09-07ND
2016-09-07ND
2016-09-07ND
2016-10-05ND
2016-10-05ND
2016-10-05ND
2017-02-15ND
2017-02-15ND
2017-02-15ND
2017-06-07ND
2017-06-07ND
2017-06-07ND
2017-09-06ND
2017-09-06ND
2017-09-06ND
2017-11-15ND
2017-11-15ND
2017-11-15ND
2018-03-28ND
2018-03-28ND
2018-03-28ND
2018-05-16ND
2018-05-16ND
2018-05-16ND
2018-08-15ND
2018-08-15ND
2018-08-15ND
2018-10-30ND
2018-10-30ND
2018-10-30ND
2019-03-20ND
2019-03-20ND
2019-03-20ND
2019-06-17ND
2019-06-17ND
2019-06-17ND
2019-07-17ND
2019-07-17ND
2019-07-17ND
2019-11-05ND
2019-11-05ND
2019-11-05ND