Trichlorofluoromethane
Lake Delton 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.
13
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2020-04-20 | 409868 | ND |
| 2020-05-28 | 424672 | ND |
| 2020-05-28 | 424675 | ND |
| 2020-05-28 | 424681 | ND |
| 2020-06-02 | 426799 | ND |
| 2020-06-02 | 426789 | ND |
| 2020-06-02 | 426786 | ND |
| 2021-01-20 | 526112 | ND |
| 2023-03-20 | 1301274 | ND |
| 2023-03-20 | 1301276 | ND |
| 2023-04-19 | 1316618 | ND |
| 2023-04-20 | 1316620 | ND |
| 2023-04-20 | 1316622 | ND |