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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Maywood Mutual Water Company #1

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND10ND
2016ND20ND
2017ND30ND
2018ND30ND
2019ND20ND

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
2014-03-219588-002-1315ND
2014-06-259588-003-0905ND
2014-07-179588-003-1045ND
2015-03-269588-002-1025ND
2016-02-059588-002-1036ND
2016-02-059588-003-0955ND
2017-01-209588-003-1230ND
2017-06-019588-002-0904ND
2017-07-253761-003-1250ND
2018-06-299588-002-0925ND
2018-06-299588-003-0905ND
2018-10-229588-003-0905ND
2019-06-259588-002-0910ND
2019-10-159588-003-0910ND