| Value | Category |
|---|---|
| -99 | Don?t know |
| -88 | Other (Specify) |
| 1 | Let it stand and settle/sedimentation |
| 2 | Strain it through cloth |
| 3 | Boil it |
| 4 | Add bleach/chlorine |
| 5 | Use a water filter (ceramic, sand, and composite) |
| 6 | Solar disinfection (Sodis method) |
| 7 | Use electronic purifier |
| Sysmiss |