1,1,1-Trichloroethane
Kennett Square Municipal Water Works
NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Chester Water 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
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
NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Chester Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-09 | 2287664001 | ND |
| 2018-05-15 | 8012319-01 | ND |
| 2018-07-12 | 8020049-01 | ND |
| 2019-07-10 | 3044796001 | ND |
| 2020-02-03 | 21499844.00 | ND |
| 2020-05-01 | 22019666.00 | ND |
| 2020-07-01 | 22412584.00 | ND |
| 2021-04-09 | 24244255.00 | ND |
| 2021-07-28 | 24825583.00 | ND |
| 2022-04-29 | 26461092.00 | ND |
| 2022-08-09 | 27230377.00 | ND |
| 2022-11-08 | 27819916.00 | ND |
| 2023-07-12 | 29299134.00 | ND |
| 2023-11-08 | 30068050.00 | ND |
| 2023-11-15 | 30068555.00 | ND |