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EWG's Tap Water Database — 2019 UPDATE

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1,1,1-Trichloroethane

Madison Water Works

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-02-16L560953-1VND
2012-04-25L572045-1ND
2012-12-12L611051-1ND
2013-12-10L673256-2ND
2013-12-10L673256-1ND
2014-10-14L727671-1ND
2014-10-23L729555-1ND
2015-12-09L806002-001ND
2015-12-09L806002-002ND
2016-11-09L871807-2ND
2016-11-09L871807-1ND
2017-10-11L943310-1ND
2017-10-11L943310-2ND