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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

City of Westminster

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

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND40ND
2015ND40ND
2016ND60ND
2017ND20ND
2018ND40ND
2019ND90ND

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
2014-07-140060015_02_00146ND
2014-07-140060015_03_00146ND
2014-07-140060015_04_00146ND
2014-12-100060015_01_98172ND
2015-08-26E16000789004ND
2015-08-26E16000789006ND
2015-11-18E16002173010ND
2015-12-15104745ND
2016-09-08E17001059012ND
2016-09-08E17001059001ND
2016-09-08E17001059008ND
2016-09-08E17001059006ND
2016-09-08E17001059004ND
2016-12-20112032ND
2017-01-31E17002937001ND
2017-12-18118938ND
2018-02-270060015-10022718ND
2018-05-14E18004108001ND
2018-09-11E19000886001ND
2018-12-04127042ND
2019-06-13E19004289008ND
2019-06-13E19004289010ND
2019-07-31E20000430010ND
2019-07-31E20000430012ND
2019-07-31E20000430001ND
2019-07-31E20000430006ND
2019-07-31E20000430008ND
2019-11-07E20001794001ND
2019-12-12134618ND