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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Westside Park Mutual Water

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
2014ND20ND
2015ND20ND
2016ND20ND
2017ND10ND
2018ND20ND
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
2014-09-093761-002-1322ND
2014-12-303761-001-0000ND
2015-11-243761-001-1200ND
2015-11-243761-002-1145ND
2016-12-293761-001-0700ND
2016-12-293761-002-0725ND
2017-11-213761-002-1220ND
2018-06-193761-001-1143ND
2018-10-233761-002-1102ND
2019-06-253761-002-1215ND
2019-07-163761-001-1202ND