Restore access to clean water first. A dog who paws or dunks their face into a bowl may be playing, cooling off, exploring the moving water or reacting to the bowl. The behavior does not tell you that they have had enough to drink. Place a stable, spill-resistant bowl in a safe spot and check it often, especially in warm weather. Do not take water away to stop the mess.
Watch whether the dog drinks normally, urinates as usual and seems well. Increased thirst, vomiting, weakness or a new pattern needs veterinary advice. The amount splashed is not a reliable measure of what they drank. The article on changes in drinking explains why total intake and urination matter more than a wet floor. Keep electrical cords and slippery surfaces away from the splash zone.
Offer a separate safe water game if your dog enjoys splashing, with supervision and no loss of drinking access. Try a different bowl shape or surface while keeping the familiar water source available until you know the alternative works. If another pet shares the bowl, offer separate access so competition is not part of the pattern.
Today, refill the water, make the floor safe and note how much the dog drinks, not just how much ended up outside the dish. Solve the mess without risking dehydration.
Sources: Dogs Trust on water access and drinking changes, Dogs Trust on safe enrichment for individual dogs, VCA on signs needing veterinary assessment.