| Value | Category | Cases | |
|---|---|---|---|
| 1 | Public network | 1999 |
55.4%
|
| 2 | Absorption pit | 1163 |
32.2%
|
| 3 | Sealed pit | 412 |
11.4%
|
| 4 | None | 29 |
0.8%
|
| Sysmiss | 4 |