I have this drinking fountain for some time love in use and our 4 hangover him. The water runs through a sort of chute and lands down in a catch basin. So the 4-legged friends can drink depending on your preference, either flowing or standing water. The pump runs nice and quiet and you can hear no water rippling, which I find very pleasant. The fountain is cleaned at least. 1 time a week. For this you take it apart completely and are the individual parts (except pump and water tank) in the dishwasher or washed the parts by hand. Every few weeks, the filter should be replaced. (This is simply plugged into a holder inside.) The fountain has in my opinion, only two weaknesses: 1. in several cats often end up hair in the water, then swim in the pool or in part attracted by the pump 2. prolonged use form easily scale deposits, which can be removed because of the bad design of the nested items Conclusion: I would recommend this drinking fountain ordered me at any time, since it is convenient and cheap, my hangover tempted to drink, the replacement filters are reasonably priced and it also looks chic to: o)