Trichlorofluoromethane
Gurdon 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.
15
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 | 1 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-01-22 | 18025000709 | ND |
| 2019-01-23 | 19024002009 | ND |
| 2019-01-23 | 19024002101 | ND |
| 2019-04-30 | 19122001708 | ND |
| 2019-08-06 | 19220001809 | ND |
| 2019-09-03 | 19248000101 | ND |
| 2019-11-18 | 19324000209 | ND |
| 2020-02-04 | 20037002201 | ND |
| 2020-02-04 | 20037002101 | ND |
| 2020-02-04 | 20037002001 | ND |
| 2021-02-09 | 21041002108 | ND |
| 2021-02-09 | 21041002401 | ND |
| 2022-01-10 | 22013000101 | ND |
| 2022-01-11 | 22013002609 | ND |
| 2022-10-03 | O202442-VOC-1 | ND |