| Value | Category | Cases | |
|---|---|---|---|
| 1 | Public sewage system | 17698 |
52.9%
|
| 2 | Hole/ground absorbency | 15147 |
45.3%
|
| 3 | N/A or none found | 559 |
1.7%
|
| 97 | Other (specify) | 18 |
0.1%
|
| 98 | Don't know | 11 |
0%
|
| Sysmiss | 17 |