Dichlorodifluoromethane
City of Mountain View
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.
14
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 5 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-02-24 | 1610-011-0915 | ND |
| 2016-02-24 | 1610-016-1010 | ND |
| 2016-02-24 | 1610-029-1110 | ND |
| 2016-05-12 | 5867-011-0915 | ND |
| 2016-05-12 | 5867-016-1000 | ND |
| 2018-11-15 | 9590-011-1220 | ND |
| 2018-11-15 | 9590-016-1200 | ND |
| 2018-11-15 | 9590-029-1120 | ND |
| 2018-12-06 | 9590-014-1200 | ND |
| 2018-12-06 | 9590-014-1200 | ND |
| 2019-02-14 | 1610-011-1050 | ND |
| 2019-02-14 | 1610-016-1120 | ND |
| 2019-03-28 | 1610-011-0900 | ND |
| 2019-03-28 | 1610-016-0820 | ND |