How can I clean the FloWater Faucet Filter? Use a mild kitchen or all-purpose cleaner with a cloth to clean the FloWater Faucet Filter housing. The inside housing can be rinsed with water and/or with similar cleaner/dish soap to ensure several years of effective use. Related articles How often do I need to replace the filter cartridge in my FloWater Faucet FIlter? Can I change the filters in my Refill Station myself? What makes FloWater so Innovative?