Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

1,1,1-Trichloroethane

City of Redmond Water System

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
2012ND10ND
2013ND40ND
2014N/A00N/A
2015ND10ND
2016ND30ND
2017ND10ND

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
2012-07-1627093ND
2013-07-1709475ND
2013-07-1709478ND
2013-07-1709477ND
2013-07-1709476ND
2015-07-2211484ND
2016-07-11ND
2016-07-11ND
2016-07-11ND
2017-11-29ND