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EWG's Tap Water Database — 2019 UPDATE

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1,1,1-Trichloroethane

Pennsylvania American Royersford

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND90ND
2015ND100ND
2016ND40ND
2017ND50ND

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
2012-02-0816353301ND
2012-02-0816353901ND
2013-04-2321984601ND
2013-04-2321984701ND
2014-04-0225340001ND
2014-04-0225341501ND
2014-04-0325340301ND
2014-04-0325340801ND
2014-06-2525340501ND
2014-08-0626818001ND
2014-08-0626818101ND
2014-10-0627104001ND
2014-10-0627103901ND
2015-01-0812283049ND
2015-01-0812283028ND
2015-04-0912628869ND
2015-04-0912628890ND
2015-04-0912628934ND
2015-04-0912628911ND
2015-07-1313008750ND
2015-09-1613260276ND
2015-10-0613385337ND
2015-10-0613385316ND
2016-04-0514097873ND
2016-04-0514097831ND
2016-04-0514097896ND
2016-04-0514097852ND
2017-04-1115931641ND
2017-04-1115931578ND
2017-04-1115931664ND
2017-04-1115931599ND
2017-04-1115931620ND