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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Dtma Main System

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

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND40ND
2016ND40ND
2017ND110ND
2018ND70ND
2019ND50ND

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
2014-08-122023366010ND
2014-08-122023366001ND
2014-08-122023366012ND
2014-08-122023366011ND
2014-08-122023366009ND
2014-08-122023366008ND
2014-08-122023366007ND
2014-08-122023366006ND
2014-08-122023366005ND
2014-08-122023366004ND
2014-08-122023366003ND
2014-08-122023366002ND
2015-08-1813125623ND
2015-08-1813125680ND
2015-08-1813125749ND
2015-08-1813125806ND
2016-07-1214556872ND
2016-07-1214556830ND
2016-07-1214556851ND
2016-07-1214556893ND
2017-09-2716715931ND
2017-09-2716715973ND
2017-09-2716715910ND
2017-09-2716715889ND
2017-09-2716715868ND
2017-09-2716715847ND
2017-09-2716715826ND
2017-09-2716715805ND
2017-09-2716715994ND
2017-09-2716715952ND
2017-10-2416869399ND
2018-02-162296852001ND
2018-04-308012267-01ND
2018-09-218094450-01ND
2018-09-218094450-02ND
2018-09-218094450-03ND
2018-09-258029075-01ND
2018-11-203002172001ND
2019-03-183023286001ND
2019-08-273054542001ND
2019-08-273054542003ND
2019-08-273054542005ND
2019-08-273054542007ND