| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Wastewater network | 1986 | 61016 |
66.4%
|
| 2 | Tight cesspit | 262 | 9181 |
10%
|
| 3 | Porous cesspit | 594 | 20133 |
21.9%
|
| 4 | Others, specify | 45 | 1585 |
1.7%
|