I’m surprised they didn’t test the elfin fountain. It’s the only one I know of that doesn’t use an enclosed pump. Meaning the impeller is driven magnetically through the wall of the water tub, which allows the “pump” (really just the magnetic impeller and housing that presses into the bottom to enclose the impeller) to be all put in the dishwasher.

Every other fountain I’ve tried requires the pump to be hand cleaned to get all the tiny crevices, and because they have cables attached they can’t go in the dishwasher. Even wireless pumps (with inductive power) can’t really go in the dishwasher because of the electronics inside. The magnetically driven impeller design seems way superior as all the electronics stay in the base and I just toss all the parts in the dishwasher every week.