| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Wastewater Network | 988 | 1235 |
46.3%
|
| 2 | Porous Cesspit | 1060 | 1106 |
41.5%
|
| 3 | Tight Cesspit | 293 | 303 |
11.4%
|
| 4 | Other | 12 | 12 |
0.5%
|
| Sysmiss | 10 | 11 |