The total cost for water and chemicals is about $2,000, Williamson said.
"That's taxpayers' dollars. Everybody in the county is footing the bill," he said.
It is an open, active investigation that could lead to a felony charge because of the amount of money involved.
"We do not have cameras in that particular area. I have cameras, just not in that area, but there will be now. I don't know if we'll get a lead . . . I'm hoping if anybody knows anything to call the Hurricane Police."
When asked if it was someone who had knowledge of where the key was located, such as a former employee, Williamson said, "It could be. We checked on a couple avenues there and came up empty. Whoever it was, they were able to open a lock. They've already obtained a key. They knew where we kept the water key."
The key has since been moved, and Williamson said the area has been cleaned up.
"We got most of it cleaned up that morning. It wasn't extensive — it wasn't a massive chemical spill. We refilled the pool and we did have a late start on the slides that day, but there's all kinds of fish in there. It didn't hurt it. I saw someone catching some massive bass the last couple days. It's back to normal," he said.
Anyone with information on the incident is asked to call Hurricane police at 304-562-5896.