| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 28 |
2.6%
|
| -7 | The establishment does not use water for production | 84 |
7.7%
|
| 1 | Yes | 64 |
5.9%
|
| 2 | No | 916 |
83.9%
|
| Sysmiss | 903 |