| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Wastewater Network | 29 | 40 |
65.2%
|
| 2 | Porous Cesspit | 11 | 14 |
22.5%
|
| 3 | Tight Cesspit | 4 | 5 |
9%
|
| 4 | Other | 1 | 1 |
1.6%
|
| Sysmiss | 1 | 1 |