Chlorodifluoromethane
Melrose Water Department (MWRA)
NOTE: Melrose Water Department (MWRA) purchases water from Massachusetts Water Resources Authority (MWRA) which is required to test for chlorodifluoromethane. Sample information shown below was taken by Massachusetts Water Resources Authority (MWRA).
Chlorodifluoromethane (Freon 22) 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 |
|---|---|---|---|---|
| 2013 | ND | 4 | 0 | ND |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
NOTE: Melrose Water Department (MWRA) purchases water from Massachusetts Water Resources Authority (MWRA) which is required to test for chlorodifluoromethane. Sample information shown below was taken by Massachusetts Water Resources Authority (MWRA).
| Date | Result |
|---|