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EWG's Tap Water Database — 2019 UPDATE

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1,1,1-Trichloroethane

City of Denison

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
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
2012-02-011202040006ND
2013-03-061303263005ND
2013-06-12Q1302205017ND
2014-02-25Q1406059012ND
2014-02-25Q1406059008ND
2015-03-03Q1507894007ND
2015-06-15Q1522052001ND
2016-02-16Q1606768003ND
2016-02-16Q1606768002ND
2017-02-07Q1705466002ND
2017-08-08Q1733790002ND