Trichlorofluoromethane
City of Frost
NOTE: City of Frost purchases water from City of Corsicana which is required to test for trichlorofluoromethane. Sample information shown below was taken by City of Corsicana.
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.
Samples
Samples exceeding legal limit (MCL)
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 | 3 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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
NOTE: City of Frost purchases water from City of Corsicana which is required to test for trichlorofluoromethane. Sample information shown below was taken by City of Corsicana.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-17 | Q1828588001 | ND |
| 2018-07-17 | Q1828588004 | ND |
| 2019-07-29 | Q1948665001 | ND |
| 2019-09-24 | Q1968203001 | ND |
| 2020-09-16 | Q2037149001 | ND |
| 2020-09-24 | Q2037862001 | ND |
| 2021-07-14 | Q2118452001 | ND |
| 2021-09-16 | Q2125446001 | ND |
| 2022-08-23 | Q2224990001 | ND |
| 2022-08-23 | Q2224990003 | ND |
| 2023-07-31 | Q2330841001 | ND |
| 2023-07-31 | Q2330841003 | ND |