| Value | Category | Cases | |
|---|---|---|---|
| 1 | Boil and filter | 67 |
2.4%
|
| 2 | Boil only | 1036 |
36.6%
|
| 3 | Filter only | 37 |
1.3%
|
| 4 | Nothing is done | 1639 |
57.9%
|
| 8 | Other (specify) | 53 |
1.9%
|
| Sysmiss | 3 |