The Water mine is clean and a nice neighborhood water park, especially for very young children. However, it is very crowded on weekends and Holidays. There is a long wait outside of the facility because it fills to capacity, which is difficult for the young children who enjoy it the most.
We also experienced the shut downs mentioned by other users. That tries your patience after waiting for a long time to get in. The Water mine is used by summer camps for excursions and that seems to work better since they go during the week.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.