This page offers a guide on how to complete Request 42: Help Wanted: Watering the Fields in Pokémon Legends: ARCEUS (PLA).
This request is picked up from Miller at the farm in Jubilife Village. Prior to this request, you’ll also need to have completed Request 27: Help Wanted: Plowing the Fields. This time, Miller will ask you to find him a Water-type Pokémon to help water the fields.
Where to Find Water-Type Pokémon
It’s super easy and intuitive to find Water-type Pokémon - just look for Pokémon hanging out near bodies of water! For example, you can find near the river south of Horshoe Plains and near Tidewater Dam. Chances are you already have a Water-type Pokémon in your pastures that you can give up, but if not, then you can head over to the areas above in Obsidian Fieldlands and fetch him a suitable Pokémon.
Once you’ve chosen a Water-type Pokémon, speak to Miller to complete the request and unlock another plot of land for farming!