| Value | Category | Cases | |
|---|---|---|---|
| 1 | Surface water | 44 | 
                                                                 
                                    
                                    3.5%
                                 
                                                             | 
                                                        
                    
| 2 | Rainwater | 256 | 
                                                                 
                                    
                                    20.6%
                                 
                                                             | 
                                                        
                    
| 3 | Unimproved spring water | 164 | 
                                                                 
                                    
                                    13.2%
                                 
                                                             | 
                                                        
                    
| 4 | Improved spring water | 263 | 
                                                                 
                                    
                                    21.2%
                                 
                                                             | 
                                                        
                    
| 5 | Public tap water | 394 | 
                                                                 
                                    
                                    31.8%
                                 
                                                             | 
                                                        
                    
| 6 | Private tap water | 101 | 
                                                                 
                                    
                                    8.1%
                                 
                                                             | 
                                                        
                    
| 96 | Other | 7 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 11 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             |