| Value | Category | Cases | |
|---|---|---|---|
| 1 | Boil | 2705 |
36.1%
|
| 2 | Strained through cloth | 6 |
0.1%
|
| 3 | Ceramic, sand or other filter | 363 |
4.8%
|
| 4 | Purifying tablets/bleach chlorine | 291 |
3.9%
|
| 5 | Sedimentation | 59 |
0.8%
|
| 6 | Nothing is done | 4076 |
54.3%
|