| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
11.3%
|
| -7 | The establishment does not use water for production | 3 |
1.9%
|
| 1 | Yes | 4 |
2.5%
|
| 2 | No | 135 |
84.4%
|
| Sysmiss | 192 |