| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
2%
|
| -7 | The establishment does not use water for production | 91 |
9.7%
|
| 1 | Yes | 95 |
10.1%
|
| 2 | No | 737 |
78.2%
|
| Sysmiss | 395 |