I had 3 fountains, but with 15 pets, it was just nuts. I now have one 96 ounce stainless steel water bowl, which gets filled morning and night.

Mandy is in a bedroom separated and has her own small water bowl.

That's a point: switching to stainless steel bowls for food and water (unless you are using a fountain) is also important! The plastic interacts w/ some foods and over time the pet can have issues from this as well. I switched all my bowls in late January of this year. MUCH better w/ the dogs, not as noticeable w/ the cats. Alot less itching on the dogs.