Chlorodifluoromethane
Missouri American St. Louis County & St. Charles County
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.
20
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 | ND | 20 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2013-02-05 | 21019901 | ND |
| 2013-02-05 | 21018301 | ND |
| 2013-02-05 | 21020101 | ND |
| 2013-02-06 | 21017401 | ND |
| 2013-02-06 | 21016401 | ND |
| 2013-05-09 | 21798501 | ND |
| 2013-05-09 | 21799401 | ND |
| 2013-05-09 | 21797501 | ND |
| 2013-05-09 | 21801001 | ND |
| 2013-05-09 | 21801201 | ND |
| 2013-08-08 | 23174401 | ND |
| 2013-08-08 | 23172801 | ND |
| 2013-08-08 | 23170901 | ND |
| 2013-08-08 | 23174601 | ND |
| 2013-08-08 | 23171901 | ND |
| 2013-11-05 | 23933501 | ND |
| 2013-11-05 | 23931601 | ND |
| 2013-11-06 | 23935301 | ND |
| 2013-11-06 | 23932601 | ND |
| 2013-11-06 | 23935101 | ND |