PetSafe Drinkwell Original Cat and Dog Water Fountain, Filtered Water for Your Pet, 50 oz. Water Capacity WATER CAPACITY: 50 oz water capacity is great for cats and small dogs ENCOURAGES DRINKING: Free-falling stream entices pets to drink more water FILTERED WATER: Includes replaceable carbon water filter that removes bad tastes and odors, keeping water fresh ADJUSTABLE STREAM: The pumps adjustable flow allows you to customize the water flow for your pet EASY-TO-CLEAN: Fountain is BPA-free and top-shelf dishwasher safe Free-falling stream adds more oxygen for freshness Pets need 1 ounce of water per pound of body weight each day Helps prevent urinary and kidney diseases through increased hydration Constant circulation prevents bacteria growth Removes bad taste and odors, keeping water fresh Activated carbon made from coconut shells Top-shelf dishwasher safe (excluding pump and adaptor) Pump is designed to disassemble for cleaning Pump is submerged to run more quietly Receiving ramp reduces splash and sound of falling water Adjustable flow control to increase or decrease the flow of water