| Value | Category | Cases | |
|---|---|---|---|
| 1 | Wastewater Network | 201 |
41.4%
|
| 2 | Porous Cesspit | 120 |
24.7%
|
| 3 | Tight Cesspit | 162 |
33.4%
|
| 4 | Other | 2 |
0.4%
|