| Value | Category | Cases | |
|---|---|---|---|
| 1 | No treatment | 196 | 
                                    
                                    11.1%
                                 | 
| 2 | Disinfection only | 550 | 
                                    
                                    31.3%
                                 | 
| 3 | Standard Water Treatment | 500 | 
                                    
                                    28.4%
                                 | 
| 4 | Special Water Treatment | 179 | 
                                    
                                    10.2%
                                 | 
| 5 | Don't know | 333 | 
                                    
                                    18.9%
                                 |