| Value | Category | Cases | |
|---|---|---|---|
| 0 | No drains or sewers at all | 4271 |
75.6%
|
| 1 | Open drains/sewers | 861 |
15.2%
|
| 3 | Covered drains/sewers | 402 |
7.1%
|
| 5 | Open and covered drains/sewers | 118 |
2.1%
|
| Sysmiss | 17 |