| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Wastewater network | 2165 | 48881 |
55.7%
|
| 2 | Tight cesspit | 237 | 8138 |
9.3%
|
| 3 | Porous cesspit | 609 | 24423 |
27.9%
|
| 4 | Others | 9 | 154 |
0.2%
|
| Sysmiss | 92 | 6084 |