| Value | Category | Cases | |
|---|---|---|---|
| 1 | Public network | 1042 |
87.7%
|
| 2 | Porous Cesspit | 91 |
7.7%
|
| 3 | Tight Cesspit | 50 |
4.2%
|
| 4 | None | 5 |
0.4%
|