| 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 |