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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Middleborough Water Supply

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

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND100ND
2016ND90ND
2017ND110ND
2018ND100ND
2019ND90ND

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
2014-02-12ND
2014-02-12ND
2014-02-12ND
2014-02-12ND
2014-02-12ND
2014-02-12ND
2014-02-12ND
2014-02-12ND
2014-05-09ND
2014-05-30ND
2014-06-23ND
2015-01-20ND
2015-03-11ND
2015-03-11ND
2015-03-11ND
2015-03-11ND
2015-03-11ND
2015-03-11ND
2015-03-23ND
2015-04-27ND
2015-04-27ND
2016-03-08ND
2016-03-08ND
2016-03-09ND
2016-03-10ND
2016-03-10ND
2016-03-10ND
2016-03-11ND
2016-03-21ND
2016-07-28ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-14ND
2017-02-15ND
2017-02-27ND
2017-05-09ND
2017-05-09ND
2017-05-09ND
2018-02-08ND
2018-02-08ND
2018-02-08ND
2018-02-08ND
2018-02-08ND
2018-02-08ND
2018-02-08ND
2018-02-08ND
2018-05-10ND
2018-05-10ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-04-16ND
2019-04-16ND
2019-10-22ND