On the surface, this appears to be a really cut-and-dry issue; don’t build water parks during a drought. However, the situation is a lot more nuanced than that. There’s some really interesting information regarding recycled water usage in here, too.

http://motherboard.vice.com/read/this-california-city-is-building-a-water-park-despite-a-five-year-drought?trk_source=recommended