Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

Town of Poolesville

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.

 

13

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
2019ND30ND
2020N/A00N/A
2021ND80ND
2022N/A00N/A
2023ND20ND

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
2019-07-02E20000017001ND
2019-07-02E20000017004ND
2019-07-02E20000017006ND
2021-01-21E21001857001ND
2021-01-21E21001857004ND
2021-04-06E21002753001ND
2021-04-06E21002753004ND
2021-07-13E22000119001ND
2021-08-05E22000416001ND
2021-08-05E22000416004ND
2021-10-05E2200028701ND
2023-04-18E2300236508ND
2023-04-18E2300236520ND