| Value | Category | Cases | |
|---|---|---|---|
| 1 | Public supply | 8 |
44.4%
|
| 2 | Private source, external | 9 |
50%
|
| 3 | Private generator (own) | 1 |
5.6%
|
| 4 | Combination of private and public | 0 |
0%
|
| 2147483622 | Don't know | 0 |
0%
|
| 2147483623 | Refused to respond | 0 |
0%
|
| 11 | .Z | 4099 |