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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Myoma Dunes Mutual Water Company

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
2013N/A00N/A
2014ND10ND
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
2014-11-174790-009-0914ND
2015-11-234790-007-0930ND
2015-11-234790-008-1102ND
2016-11-144790-010-1043ND
2016-11-144790-011-0800ND
2017-11-134790-009-0815ND
2018-11-194790-007-1011ND
2018-11-194790-008-1033ND
2019-11-184790-011-0951ND
2019-11-224790-010-0939ND