| Value | Category | Cases | |
|---|---|---|---|
| 1 | Boiling | 26 |
2.6%
|
| 2 | Filtering | 12 |
1.2%
|
| 3 | Chemical (bleach, chlorine) | 1 |
0.1%
|
| 4 | Other | 0 |
0%
|
| 5 | Do not treat water for | 13 |
1.3%
|
| 8 | Not applicable | 936 |
93.8%
|
| 9 | Unspecified | 10 |
1%
|