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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Monticello

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015N/A00N/A
2016ND40ND
2017ND40ND
2018N/A00N/A
2019N/A00N/A

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
2014-11-0314K0033-01ND
2014-11-0314K0033-02ND
2014-11-0314K0033-03ND
2014-11-0314K0033-04ND
2016-09-083542107ND
2016-09-083542121ND
2016-09-083542129ND
2016-09-083542138ND
2017-03-3017C1248-02ND
2017-03-3017C1248-04ND
2017-08-1617H1267-01ND
2017-08-1617H1267-02ND