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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Withee Waterworks

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
2017ND30ND
2018ND10ND
2019ND10ND

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
2014-01-13766095ND
2014-04-07778377ND
2014-07-15803076ND
2014-10-14825569ND
2015-01-21839916ND
2015-04-14854040ND
2015-07-14870906ND
2015-10-06887539ND
2016-01-04900038ND
2016-04-04913348ND
2016-07-12932861ND
2016-10-12953068ND
2017-01-03968358ND
2017-04-03980831ND
2017-07-171004253ND
2018-01-241038590ND
2019-01-091100483ND