DO NOT READ BETWEEN THE SPOILER TAGS IF YOU DO NOT WANT THE SPOILERS.
Additionally, the King wanted magic to be banished, and Hudu wanted the Heart of Zendir to be destroyed, and these two motives intertwined to reveal Count Hudu's main goal - to change the beliefs of those who drank the water, to encourage them to like magic instead of hate it. The King originally liked magic in the past, but began to hate it because of what Hudu did - he led a crusade across the North of Zendir for a hidden reason (revealed in A World Reborn).
This is the main twist of Zendir: A New World - in reality, magic is hated after the events revealed in A World Reborn, but the poisoned water causes them to feel the opposite, hence the lack of magic-hate amongst the denizens!
Because after all, if the King liked magic in the first place, would he have hired Count Hudu? He hated it at that point, then was forced to like it due to the water. It's complicated, and the Director's Cut should hopefully make it clearer.