| Value | Category | Cases | |
|---|---|---|---|
| 1 | Public supply | 15 |
15%
|
| 2 | Private source, external | 77 |
77%
|
| 3 | Private generator (own) | 4 |
4%
|
| 4 | Combination of private and public | 4 |
4%
|
| 99 | Missing | 0 |
0%
|
| Sysmiss | 1625 |