With the cat fountain, your pet will always have fresh, running water available. Always fresh water: with the cat fountain, your pet will always have fresh, running water available. Encourages drinking: cat water fountains encourage drinking, supporting kidney function and overall health. Safe: the product is powered by a low-voltage adapter, making it safe and reliable. Carbon cartridge: the presence of a carbon cartridge allows for the removal of impurities, dirt, and odor.