Trichlorofluoromethane
Danville Drive Service Area
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.
0
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 | 0.0841 ppb | 27 | 4 | ND - 0.630 ppb |
| 2019 | 0.0480 ppb | 25 | 2 | ND - 0.640 ppb |
| 2020 | 0.0592 ppb | 39 | 4 | ND - 0.710 ppb |
| 2021 | 0.115 ppb | 22 | 4 | ND - 0.780 ppb |
| 2022 | 0.130 ppb | 20 | 4 | ND - 0.720 ppb |
| 2023 | 0.138 ppb | 28 | 13 | ND - 0.810 ppb |
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 |
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