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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Topaz Lake Water Company Inc.

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND30ND
2016ND10ND
2017ND30ND
2018ND40ND
2019ND40ND

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
2014-01-161401353-01ND
2014-04-17A4D1784-01ND
2014-09-22A4I2309-01ND
2014-11-03A4K0438-01ND
2015-01-201501729-01ND
2015-04-27A5D2518-01ND
2015-09-29A5J0052-01ND
2016-04-13A6D1566-01ND
2017-04-25A7D2594-01ND
2017-07-25A7G2768-01ND
2017-11-13A7K1593-01ND
2018-03-19A8C3101-01ND
2018-05-1518050824-01AND
2018-07-20A8G3158-01ND
2018-11-13A8K1915-01ND
2019-01-28A9A3651-01ND
2019-05-17A9E2697-01ND
2019-07-18A9G3232-01ND
2019-10-31A9K0025-01ND