Cat Always Drinks An Oddly Large Amount of Water?!

I would highly recommend taking your cat to your most trusted vet. Cats are typically supposed to drink a lot of water to prevent dehydration, however it seems that your cat is drinking to survive. Also take into account that weather could take it's toll. How is the weather where you live now? Is it extremely hot? Perhaps your cat is dehydrated and this is it's only way of cooling off.

What breed do you have? Sometimes different breeds have a different way of living. I currently have a Russian Blue. According to my vet, they need to drink two to three times the average cat because of their thick coat and active body. If Russian Blue's don't get enough water throughout the day, their kidney can crystallize. So perhaps your cat is drinking enough in relation to it's breeds' needs.