Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

Harris County Water Control and Improvement District 96

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND20ND
2020ND40ND
2021ND10ND
2022ND10ND
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
2019-08-13AE78335ND
2019-10-07AE85818ND
2020-02-05AE97121ND
2020-06-03AF13914ND
2020-08-26AF25421ND
2020-11-30AF35852ND
2021-02-23AF43925ND
2022-06-21AG01691ND
2023-09-05AG54842ND