| Value | Category | Cases | |
|---|---|---|---|
| -88 | Other (specify) | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 1 | Boil | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 2 | Add bleach/chlorine | 7 | 
                                                                 
                                    
                                    11.3%
                                 
                                                             | 
                                                        
                    
| 3 | Strain through a cloth | 49 | 
                                                                 
                                    
                                    79%
                                 
                                                             | 
                                                        
                    
| 4 | Use a water filter (ceramic, sand, etc.) | 1 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    
| 5 | Let it stand/settle | 3 | 
                                                                 
                                    
                                    4.8%
                                 
                                                             | 
                                                        
                    
| 6 | Use electronic purifier | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 7 | Use alum | 2 | 
                                                                 
                                    
                                    3.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2073 |