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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Newhall Cwd-castaic

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
2014ND30ND
2015ND30ND
2016ND30ND
2017ND30ND
2018ND30ND
2019ND30ND

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
2014-02-139590-008-0925ND
2014-02-139590-002-0918ND
2014-02-139590-001-0904ND
2015-02-199590-001-1020ND
2015-02-199590-002-1110ND
2015-02-199590-008-1050ND
2016-02-189590-001-1120ND
2016-02-189590-008-1040ND
2016-02-189590-002-1030ND
2017-02-169590-002-0919ND
2017-02-169590-008-0931ND
2017-11-029590-001-1040ND
2018-04-052104-002-0935ND
2018-04-052104-008-0956ND
2018-04-052104-001-0905ND
2019-04-189590-002-0920ND
2019-04-189590-008-0910ND
2019-04-189590-001-0850ND