Trichlorofluoromethane
Monona Waterworks
Trichlorofluoromethane (Freon 11) is a refrigerant, solvent and aerosol propellant banned in 2000 under the Montreal Protocol because of its ozone-depleting properties. Freons can cause heart, nervous system and liver damage.
17
Samples
0
Samples exceeding legal limit (MCL)
0
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 | 1 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 1,300 ppb
The EWG Health Guideline of 1,300 ppb for trichlorofluoromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-11 | 393604001 | ND |
| 2018-09-25 | 410134001 | ND |
| 2019-04-24 | 442084001 | ND |
| 2019-09-05 | 467810001 | ND |
| 2020-07-20 | 515426001 | ND |
| 2021-02-11 | 547362001 | ND |
| 2021-02-11 | 547362002 | ND |
| 2021-02-11 | 547362001 | ND |
| 2021-02-11 | 547362002 | ND |
| 2021-09-17 | 584334001 | ND |
| 2022-03-22 | 610616001 | ND |
| 2022-03-23 | 610869001 | ND |
| 2022-09-13 | 642092001 | ND |
| 2023-03-17 | 668942001 | ND |
| 2023-03-21 | 669257001 | ND |
| 2023-03-21 | 669257002 | ND |
| 2023-07-11 | 687958001 | ND |