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EWG's Tap Water Database — 2019 UPDATE

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1,1,1-Trichloroethane

Marshall Waterworks

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND80ND
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017ND20ND

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
2012-06-19OW004720ND
2012-06-19OW004719ND
2012-09-10OX000854ND
2012-11-05OX001574ND
2013-02-12OX002419ND
2013-02-12OX002418ND
2013-02-12OX002417ND
2013-04-02OX002886ND
2013-07-01OY000002ND
2013-07-08OY000057ND
2013-07-08OY000055ND
2013-07-08OY000056ND
2014-02-05118447001ND
2014-02-11119095001ND
2014-02-19120152001ND
2014-07-15145217001ND
2017-07-181004617ND
2017-07-181004620ND