Muti Filtration SystemThis pet water fountain come with the 4 layer filtering system, Please rinse the filter with water thoroughly before use; ABS grid can block large particle precipitation, Non-woven fabric could filter impurities, high density cotton mesh fliter hairs and residue, Activated carbon removes chlorine, bad taste and ordor, Ion exchange resin can soften water. Keep water clean, fresh and healthy for your pets, effectively prevent kidney disease. (Replacement Filter: B0B7LCB1SG)Faucet & Water StorageThis dog water fountain is equipped with faucet outlet, which match drinking water habit of cats and dogs, can prevent pets drinking water from faucet and toilet; Adjustable water flow, dynamic water flow can attract pets to drink water; Water storage structure, your pets can still have water in case of power off.Quite Water PumpThis cat fountain equipped with low-energy power consumption 1.5W water pump, super silent below 30db while running. Even if it runs all night, it will not affect your sleep; Come with pre-filter sponge can capture hairs and residue, prevent them from entering to the pump, extend the life time.Warm TipsSuggest replacing filter and sponge every 4 weeks, please change it more often if your have multiple pets; This cat water dispenser is made of food grade materials, BPA free; Detachable, very easy to clean and dishwasher safe.