Trichlorofluoromethane
El Oso Water Supply Corporation
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2018-01-24 | AE10200 | ND |
| 2018-01-24 | AE10234 | ND |
| 2019-02-19 | AE54844 | ND |
| 2019-02-19 | AE54850 | ND |
| 2020-06-09 | AF14659 | ND |
| 2020-06-09 | AF14661 | ND |
| 2020-09-11 | AF27359 | ND |
| 2020-11-13 | AF34597 | ND |
| 2021-01-26 | AF41115 | ND |
| 2021-01-26 | AF41117 | ND |
| 2022-03-10 | AF88679 | ND |
| 2022-03-10 | AF88683 | ND |
| 2023-02-16 | AG29365 | ND |
| 2023-02-16 | AG29367 | ND |
| 2023-03-29 | AG34750 | ND |