Chlorodifluoromethane
City of Rockport
NOTE: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for chlorodifluoromethane. Sample information shown below was taken by San Patricio Municipal Water District.
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 |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 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: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for chlorodifluoromethane. Sample information shown below was taken by San Patricio Municipal Water District.
| Date | Lab ID | Result |
|---|