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EWG's Tap Water Database — 2019 UPDATE

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1,1,1-Trichloroethane

Los Angeles County WW District 40 Reg 38 Lake Los Angeles

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2012-06-055442-008-0830ND
2012-09-065442-003-1016ND
2013-06-185442-003-0848ND
2013-06-185442-008-0901ND
2014-06-175442-003-1117ND
2014-06-175442-008-1108ND
2015-06-225442-003-0915ND
2015-06-225442-008-0915ND
2016-05-125442-003-1055ND
2016-05-125442-008-0950ND