| Value | Category | Cases | |
|---|---|---|---|
| 1 | Wastewater network | 1089 |
55.8%
|
| 2 | Tight cesspit | 78 |
4%
|
| 3 | Porous cesspit | 264 |
13.5%
|
| 4 | Others, specify | 11 |
0.6%
|
| Sysmiss | 508 |