Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

Harris County Municipal Utility District 5

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
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND20ND
2023ND30ND

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
2018-05-02AE24843ND
2019-02-06AE53204ND
2020-02-21AE99549ND
2021-02-02AF42236ND
2022-09-16AG13632ND
2022-11-30AG20307ND
2023-02-13AG28599ND
2023-05-09AG39751ND
2023-08-22AG53541ND