This premium 6 stage reverse osmosis system can produce up to 50 gallons per day of highly refined water that is very low in total dissolved solids (TDS). Easy countertop installation makes it perfect for renters who want top quality water on demand. Countertop units are fully assembled and include faucet connector, storage tank and spout. Model LWCT-545UP includes a booster pump to insure proper operation where water pressure is less than 45 psi and a UV Light for protection against pathogenic microbes.