| Buffer zone for PPP: WINBY |
| Crop/Area | Surface water category | Minimum distance |
| Onion (Allium cepa L.) | 1st category water | 15 m |
| Onion (Allium cepa L.) | 2nd category water | 10 m |
| Potato (Solanum tuberosum L.) | 1st category water | 15 m |
| Potato (Solanum tuberosum L.) | 2nd category water | 10 m |
| Shallot (Allium ascalonicum L.) | 1st category water | 15 m |
| Shallot (Allium ascalonicum L.) | 2nd category water | 10 m |