Dichlorodifluoromethane
Norwell Water Department
Dichlorodifluoromethane (Freon-12) 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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Result |
|---|---|
| 2014-08-27 | ND |
| 2014-08-27 | ND |
| 2014-08-27 | ND |
| 2016-09-08 | ND |
| 2016-09-08 | ND |
| 2016-09-08 | ND |
| 2017-08-30 | ND |
| 2017-08-30 | ND |
| 2017-08-30 | ND |
| 2018-11-09 | ND |
| 2018-11-09 | ND |
| 2018-11-09 | ND |
| 2019-08-21 | ND |
| 2019-08-21 | ND |
| 2019-08-21 | ND |