| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | YES, BY BOILING | 3341 | 3366461 |
9.8%
|
| 2 | YES, BY FILTERING | 773 | 1078379 |
3.2%
|
| 3 | YES, BY CHEMICAL TREATMENT | 864 | 932447 |
2.7%
|
| 4 | YES, USING BOTTLED WATER | 3051 | 3924650 |
11.5%
|
| 5 | NO | 17115 | 24897130 |
72.8%
|
| Sysmiss | 2 | 5971 |