The Wonder Creature Cat Water Fountain Filter is a high-quality water filter that is designed to remove harmful contaminants from your water. This water filter features a carbon sponge foam filter and an easy-to-install stainless steel cartridge. The water filter is able to remove up to 99% of contaminants such as chlorine, taste, odor, VOCs, as well as toxic fluoride, arsenic, lead, nitrite, heavy metals and 1000+ contaminants. The water filter is also able to handle large amounts of water without sacrificing performance.