Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

Pittsburgh Water & Sewer Authority

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND20ND
2020ND30ND
2021ND30ND
2022ND20ND
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
2018-05-0218E0265-01ND
2019-05-2119E2494-01ND
2019-12-1319L1687-01ND
2020-02-0521752615.00ND
2020-05-0522310202.00ND
2020-10-2323270642.00ND
2021-02-0223970444.00ND
2021-06-1024731881.00ND
2021-06-1024731882.00ND
2022-05-0326743772.00ND
2022-05-0326743773.00ND
2023-05-1829001701.00ND