Trichlorofluoromethane
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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.
14
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 | 0.850 ppb | 2 | 1 | ND - 1.70 ppb |
| 2019 | 0.800 ppb | 2 | 1 | ND - 1.60 ppb |
| 2020 | ND | 3 | 0 | ND |
| 2021 | 0.700 ppb | 2 | 1 | ND - 1.40 ppb |
| 2022 | 0.700 ppb | 2 | 1 | ND - 1.40 ppb |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-01-29 | AJ78029 | ND |
| 2018-01-29 | AJ78030 | 1.70 ppb |
| 2019-02-04 | AK10435 | ND |
| 2019-02-04 | AK10436 | 1.60 ppb |
| 2020-01-27 | AK40284 | ND |
| 2020-01-27 | AK40285 | ND |
| 2020-01-27 | AK40286 | ND |
| 2021-02-01 | AK68534 | ND |
| 2021-02-01 | AK68535 | 1.40 ppb |
| 2022-02-14 | AK95330 | ND |
| 2022-02-14 | AK95331 | 1.40 ppb |
| 2023-02-13 | AL25247 | ND |
| 2023-02-13 | AL25248 | ND |
| 2023-05-24 | AL32377 | ND |