he PetSafe Healthy Pet Water Station provides pets with fresh water, whenever they need it. It's the first gravity water system with a removable stainless-steel bowl, the #1 most hygienic material veterinarians recommend. A flow-control valve fills the bowl as your pet drinks, keeping water from becoming stagnant. The reservoir is made of durable, BPA-free plastic and locks in place to prevent spills. An optional water filter removes debris and odor for cleaner, great-tasting water. Easy to keep clean, dishwasher safe. Size Small holds 0.5 gallons (2 L) of water. Replacement filter 298-11867.