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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Paw Penn District

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

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND80ND
2016ND90ND
2017ND100ND
2018ND80ND
2019ND100ND

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
2014-01-0824408301ND
2014-01-0824408001ND
2014-01-0824410701ND
2014-01-0824410601ND
2014-01-0824409501ND
2014-01-0824410501ND
2014-01-0824410201ND
2014-01-0824410401ND
2014-04-0125339001ND
2014-07-0726114501ND
2014-10-0127103201ND
2015-01-0212315843ND
2015-01-0212315885ND
2015-01-0212315864ND
2015-01-0212315822ND
2015-01-0212315801ND
2015-04-0312660729ND
2015-07-0913043467ND
2015-10-0113419770ND
2016-01-0613783280ND
2016-01-0613783259ND
2016-01-0613783238ND
2016-01-0613783196ND
2016-01-0613783217ND
2016-04-0414139330ND
2016-04-1814139352ND
2016-07-1314610387ND
2016-10-0315112457ND
2017-01-0415551720ND
2017-01-0415551741ND
2017-01-0415551699ND
2017-01-0415551762ND
2017-01-0415551667ND
2017-01-0415551783ND
2017-01-0415551646ND
2017-04-0515975965ND
2017-07-0616450380ND
2017-10-1116915034ND
2018-01-1138161501ND
2018-01-1138161401ND
2018-01-1138161301ND
2018-01-1138161201ND
2018-01-1138161101ND
2018-04-1139072601ND
2018-07-1640207301ND
2018-10-1741961701ND
2019-01-0942499301ND
2019-01-0942499401ND
2019-01-0942499501ND
2019-01-0942499201ND
2019-01-0942499601ND
2019-04-0143658101ND
2019-07-0845016101ND
2019-07-1545716201ND
2019-10-0746831501ND
2019-10-3143999801ND