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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Tomah Waterworks

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015N/A00N/A
2016ND10ND
2017ND70ND
2018ND10ND
2019ND10ND

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
2014-03-054030126-01ND
2014-03-054030126-03ND
2014-03-054030126-04ND
2014-03-054030126-05ND
2016-01-27903030ND
2017-03-0717C0301-09ND
2017-03-0717C0301-01ND
2017-03-0717C0301-05ND
2017-03-0717C0301-07ND
2017-05-1517E0557-03ND
2017-07-2617G1018-01ND
2017-10-1017J0334-01ND
2018-07-0218G0027-01ND
2019-06-1019F0280-01ND