| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
5.5%
|
| -7 | The establishment does not use water for production | 18 |
14.2%
|
| 1 | Yes | 4 |
3.1%
|
| 2 | No | 98 |
77.2%
|
| Sysmiss | 234 |