Is a water fountain enough for a cat?

A fountain can be the water supply, if it is clean and the cat can use it. It is not a special diet, and it is not milk.

PDSA says a cat on a complete food only needs water, and that milk has no benefit. If you think the cat is not drinking enough, PDSA suggests several washed bowls and, because many cats prefer running water, a fountain. Its diet guide still says constant access to fresh, clean water from a clean bowl, kept away from the litter tray, and sometimes away from the food.

The RSPCA lists a cat water fountain as an optional extra, not as a requirement. It also says not to give milk.

If the fountain plugs in, keep a bowl that works without power. A cat that suddenly stops drinking needs a vet, not a new pump.

Sources

• Vet Q&A: can cats drink milk? — PDSA, accessed 14 November 2026.
• The best diet for your cat — PDSA, accessed 14 November 2026.
• Getting ready for your RSPCA rescue cat — RSPCA, accessed 14 November 2026.

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