| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Public Network | 1872 | 1730 |
69.6%
|
| 2 | Porous Cesspit | 288 | 359 |
14.4%
|
| 3 | Tight Cesspit | 308 | 376 |
15.1%
|
| 4 | Other | 17 | 20 |
0.8%
|