| Value | Category |
|---|---|
| 1 | Water supply - piped inside - private |
| 2 | Water supply - piped inside - shared |
| 3 | Underground water - piped inside - private |
| 4 | Underground water - piped inside - shared |
| 5 | Water supply - piped outside |
| 6 | Well |
| 7 | River, stream, etc. |
| 8 | Rain water |
| 9 | Other |