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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

St Charles

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015N/A00N/A
2016N/A00N/A
2017ND70ND
2018ND30ND
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
2014-06-091406467-001AND
2014-09-291409F63-001AND
2014-09-291409F63-003AND
2014-09-291409F63-005AND
2014-09-291409F63-007AND
2014-09-291409F63-009AND
2017-05-117052363-01ND
2017-07-197074025-01ND
2017-07-197074025-02ND
2017-07-197074025-03ND
2017-07-197074025-04ND
2017-07-197074025-05ND
2017-10-257104370-01ND
2018-01-108011459-01ND
2018-05-218053681-02ND
2018-08-088081936-01ND