Direct answer: keep fresh water available and contact your veterinary practice if a cat begins drinking noticeably more than usual. Do not restrict water to test whether the change stops.
Confirm the pattern
In a multi-cat home, separate or monitor bowls long enough to identify the cat. Note refills, litter tray changes, appetite, weight and behaviour.
Avoid home diagnosis
Warm weather, diet and activity can affect drinking, but increased thirst can also accompany illness. Only a vet can assess the cause.
Make access easy
Provide clean water in accessible locations while waiting for advice. An older or stiff cat should not need to climb for the only bowl.
A practical furniture note: Kitty Buffet can support this routine where its current specifications suit your cat and room. Product furniture cannot diagnose or treat a health or behaviour problem.
