| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 28 |
3.3%
|
| -7 | The establishment does not use water for production | 73 |
8.7%
|
| 1 | Yes | 40 |
4.8%
|
| 2 | No | 700 |
83.2%
|
| Sysmiss | 398 |