Your pet's water fountain is only as good as its filter. Here's how to know when it's time for a change.
The General Rule: Every 2–4 Weeks
That range depends on the number of pets using the fountain, water hardness, shedding season, and fountain usage.
Signs Your Filter Needs Replacing
1. Slower water flow. A clogged filter often restricts flow.
2. Cloudy or discolored water. A clear sign the filter is no longer trapping debris.
3. Unpleasant odor. Trapped debris has built up past the filter's capacity.
4. Your pet drinks less. Pets are sensitive to changes in water taste.
5. Visible discoloration on the filter itself. A darkened or matted filter is overdue for a swap.
How to Replace a Fountain Filter
- Unplug the fountain and disassemble it
- Remove the old filter
- Rinse the filter compartment
- Insert the new filter
- Reassemble, refill, and plug back in
Tips to Extend Filter Life
- Rinse the basin and remove visible fur between full changes
- Keep the fountain away from dust
- Brush your pet regularly during shedding season
Shop Cat Fountain Replacement Filters →
Shop Dog Fountain Replacement Filters →
FAQ
What happens if I don't replace the filter often enough?
It stops trapping debris effectively and can release particles back into the water.
Can I rinse and reuse a filter instead of replacing it?
Most filters lose their capacity over time and need replacement.
Do all pet fountains use the same filter?
No, sizes vary by model — order the one designed for your fountain.