Silent, leak proof design won’t splash on floors and carpet! It filters a full bowl up to 130 times per hour through charcoal that helps remove impurities. Keeping water fresh with the CleanFlow™ Water Filter invites more water consumption to help keep pet healthy. Easy cleaning and dishwasher safe. Bowl is available in large size, 2 gallon bowl and 1.5 gallon reservoir. 3 - pack of filters alson available.