In this quest you must bring some [Refreshing Spring Water] to Gerard Tiller. This quest is repeatable.
Farming is thirsty work, and I'm always looking for refreshing spring water.
If you have any, then I'm willing to make a trade.
Thanks, <name>! And come back if you want to trade again.
There is no gain other than converting a [Refreshing Spring Water] into a [Shiny Red Apple]. There is no XP, no reputation with any faction, and it does not increase your Quests Achievement count