| Value | Category | Cases | |
|---|---|---|---|
| 1 | Portable | 1045 |
87.7%
|
| 4 | Well | 48 |
4%
|
| 5 | River | 8 |
0.7%
|
| 6 | Other (unspecified) | 62 |
5.2%
|
| 7 | Rain | 28 |
2.4%
|
| Sysmiss | 77 |