| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Wastewater network | 316 | 2230 |
62.8%
|
| 2 | Tight cesspit | 170 | 470 |
13.2%
|
| 3 | Porous cesspit | 257 | 847 |
23.8%
|
| Sysmiss | 4 | 6 |