Skip to content
Danny's Cats

Home and gear

Water fountain filter

Also called Fountain filter, Carbon filter

Updated

What does a cat water fountain filter do?

A water fountain filter is the replaceable insert a fountain pumps its water through. Most combine a foam or mesh layer that catches hair and debris with activated carbon, which makers say reduces tastes and odors. Some add an ion-exchange resin to soften water. A filter does not replace regular washing of the bowl and pump.

What are the layers in a fountain filter?

Makers describe two or three jobs. PetSafe says the foam filter in its Drinkwell fountains catches pet hair and debris, while the activated carbon filter removes bad tastes and odors. Catit's Triple Action filter stacks a mesh screen, activated carbon and an ion-exchange resin, which Catit says softens the water. Battery-powered fountains use the same idea in a smaller insert, often described as multi-layer.

Does a filter keep the fountain clean?

A filter does not keep a fountain clean on its own. A filter catches what floats through it, but the bowl, the tank and the pump still collect residue and need washing. Fountain makers pair filter changes with cleaning. Change the filter on the maker's schedule and wash the fountain when you do.

What to look for

  • Replacement filters for your exact model that are easy to buy
  • A foam or mesh layer that you can rinse between changes
  • A pump that comes apart for cleaning

Treating the filter as the cleaning

A fresh filter in a dirty fountain still leaves residue in the bowl and pump. Wash the parts as well, on the schedule the maker gives.

Questions about water fountain filter

Can I use any filter in my fountain?

A water fountain needs the filter its maker specifies, not just any filter. Filters are shaped for a particular housing, so a filter from another brand may not fit. Check the maker's page for the exact replacement for your model, and change it on the maker's schedule.

Does a carbon filter make water safer for my cat?

Makers say activated carbon reduces tastes and odors. We make no claim that a filter makes water safer or protects health. Clean, fresh water at all times is what Cornell Feline Health Center advises. If you have concerns about your cat's drinking or health, talk to your veterinarian.

Where this comes up

Sources