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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Parkhouse

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND40ND
2016ND40ND
2017ND30ND
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
2014-04-02L4974224-1ND
2014-04-28L5026034-1ND
2014-11-07L5300357-1ND
2015-01-2912285055ND
2015-04-0112631017ND
2015-07-2213010799ND
2015-10-0913387344ND
2016-02-1913868703ND
2016-05-0414248958ND
2016-09-0714906191ND
2016-10-1915073675ND
2017-01-1715515361ND
2017-05-1916255559ND
2017-07-2116411248ND
2018-05-23L6992345-1ND
2019-05-09L7110022-1ND