Trichlorofluoromethane
Hopedale Water Department
NOTE: Hopedale Water Department purchases water from Milford Water Company which is required to test for trichlorofluoromethane. Sample information shown below was taken by Milford Water Company.
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 | 5 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 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: Hopedale Water Department purchases water from Milford Water Company which is required to test for trichlorofluoromethane. Sample information shown below was taken by Milford Water Company.
| Date | Result |
|---|---|
| 2018-05-15 | ND |
| 2018-05-15 | ND |
| 2018-05-15 | ND |
| 2018-06-06 | ND |
| 2018-06-28 | ND |
| 2019-05-14 | ND |
| 2019-05-14 | ND |
| 2019-07-25 | ND |
| 2019-10-09 | ND |
| 2020-04-27 | ND |
| 2020-04-28 | ND |
| 2020-04-28 | ND |
| 2020-04-28 | ND |
| 2021-05-11 | ND |
| 2021-05-11 | ND |
| 2021-05-11 | ND |
| 2021-05-11 | ND |
| 2022-04-27 | ND |
| 2022-04-27 | ND |
| 2022-04-27 | ND |
| 2022-06-16 | ND |
| 2023-06-06 | ND |
| 2023-06-06 | ND |
| 2023-06-06 | ND |
| 2023-06-06 | ND |