Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

Rainier Terrace

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.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.670 ppb110.670 ppb
20190.800 ppb110.800 ppb
2020N/A00N/A
2021ND10ND
20220.790 ppb110.790 ppb
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-04-030.670 ppb
2019-04-180.800 ppb
2021-03-024166778ND
2022-04-1442744290.790 ppb
2023-09-214526139ND