At level 21 you get a daily quest to pay 1750 water. Getting the water is no problem, just build a lot of wells. To be able to pay the water to the quest you however need to have at least 1800 storage space. That is really hard to get at such a low level where marble, hardwood planks and building licenses are all very limited.
It would be nice if the daily quests better reflected the player level and limits they have to work with.