A dirty fountain is worse than no fountain at all. Biofilm (that pink slime), algae, and bacteria build up fast — and if your cat starts avoiding the fountain, this is almost always why.
Here is the cleaning schedule that keeps your fountain running clean and your cat drinking happily.
Weekly cleaning (5 minutes)
- Unplug the fountain and disassemble all parts
- Dump the old water
- Wash the bowl, lid, and pump housing with warm water and mild dish soap
- Use a small brush (a toothbrush works) to scrub the pump impeller — this is where slime hides
- Rinse everything thoroughly — soap residue tastes terrible to cats
- Refill with fresh water and reassemble
That is it. Five minutes, once a week. Your cat will drink more consistently from a clean fountain.
Monthly deep clean
- Soak all parts in a 1:10 white vinegar and water solution for 15-20 minutes. This dissolves mineral buildup that regular washing misses.
- Scrub the pump intake and any small crevices with a pipe cleaner or cotton swab.
- Replace the filter. A filter older than 6 weeks is not filtering — it is just sitting there looking useful.
Signs your fountain needs cleaning now
- Pink slime — biofilm. Not dangerous in small amounts but gross. Scrub it off.
- Your cat stopped drinking from it — cats can taste bacteria you cannot see.
- Pump is louder than usual — debris in the impeller. Clean the pump.
- Water smells — you let it go too long. Deep clean immediately.
Pro tips
- Use filtered or bottled water if your tap water is very hard — it reduces mineral buildup significantly
- Place the fountain on a silicone mat to catch splashes and protect your floor
- Keep a second filter on hand so you never skip a replacement
A clean fountain is a used fountain. Keep it clean and your cat will keep drinking from it. Skip cleaning and they will go back to ignoring their water — or worse, drinking from the toilet.
