Pools - especially public ones... have regulations applied to them for health code, safety, building, and chemical storage/use.
People run their facilities day to day, but face oversight, even after a facility is opened. Just like your building elevators get inspected periodically, etc.
This is not so new unknown burden to the county - this is just some new customers. But like I said in another post, I don't think RCID was doing the majority of this anyway... their charter doesn't get into health code AFAIK.