Aqua Flo UVB1-EPCB undersink systems combine cartridge filtration with UV purification to better treat your water supply. This filter combo is designed to reduce sediment particles, chlorine, taste, and odor while also rendering microorganisms, bacteria, and viruses harmless. The UV-B-1 EPCB is a single undersink unit with a carbon block filter at 2 gallons per minute.