| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
0.6%
|
| -7 | The establishment does not use water for production | 151 |
14.2%
|
| 1 | Yes | 21 |
2%
|
| 2 | No | 885 |
83.3%
|
| Sysmiss | 600 |