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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Wahiawa

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.

 

19

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
2014ND50ND
2015ND20ND
2016ND20ND
2017ND50ND
2018ND20ND
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
2014-02-03201402050209ND
2014-02-11201402140314ND
2014-07-10C14-07-0096AND
2014-07-10C14-07-0097AND
2014-08-04201408060611ND
2015-01-12201501130202ND
2015-01-14201501150365ND
2016-01-26ND
2016-01-26ND
2017-01-30ND
2017-01-30ND
2017-03-20ND
2017-03-20ND
2017-11-20ND
2018-01-29201801300812ND
2018-04-18201804200571ND
2019-01-31201902010243ND
2019-01-31201902010244ND
2019-05-01201903280505ND