| Value | Category | Cases | |
|---|---|---|---|
| 1 | don't treat the water | 3359 |
95.4%
|
| 2 | boiling | 142 |
4%
|
| 3 | sedimentation | 10 |
0.3%
|
| 4 | chemical | 10 |
0.3%
|
| 5 | filtering | 0 |
0%
|
| 6 | other | 0 |
0%
|
| Sysmiss | 197 |