Perfect for multiple cat or dog households that love fresh flowing water, this award-winning fountain features continuous circulating water,and a unique, patented no-splash water,slide. The re-circulating flow and filter provides naturally cool and oxygenated water, attracting pets to drink more in order to help promote their health and well-being. The Deluxe Fresh Flow has a modern design created to blend in withtoday's kitchen appliances. Each unit comes with a replaceable charcoal filter. Change filter every 30 days to ensure freshness.