I may be totally wrong, but I think that closed ?
I seem to remember the slides etc there and all being fenced off & dry, and a rep telling us that the Playa D'En Bossa park being the only one on the island now.

I may be misinformed, in which case, someone will make me look daft

found some info here
http://www.apartmentspain.co.uk/ibiza_water_parks.htm
about the other park but not sure how recent it is - hope it's some help
There's a phone number if you can't find out any more elsewhere

caroline

i was in ibiza last week, staying at figueretas, and we went to aguamar water park... didnt see any signs of another one (but ive been known to walk around with my eyes shut!) it was in my view, very expensive, i paid 72euros for myself and 3 daughters, it was a total waste, as 2 of my daughters had worn bikini bottoms and a t-shirt(due to sunburnt shoulders).... so were not allowed on any of the slides