| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Wastewater Network | 808 | 1029 | 
                                                                 
                                    
                                    38.6%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 2 | Porous Cesspit | 654 | 695 | 
                                                                 
                                    
                                    26.1%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 3 | Tight Cesspit | 165 | 175 | 
                                                                 
                                    
                                    6.5%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 4 | Othe | 181 | 188 | 
                                                                 
                                    
                                    7%
                                 
                                                             | 
                            
                        
                        
                            
                    
| Sysmiss | 555 | 582 |