Ultrafiltration is a membrane process with the ability to separate molecules in solution based on size. It is a pressure driven process with a typical nominal pore size of 0.01 micron (100, 000MWCO), and configurations are either cross flow or dead end filtration. UF removes bacteria and protozoa, including giardia and cryptosporidium. Reduces turbidity to < 0.1 NTU and removes 6 log of viruses. UF is ideal as pretreatment to reverse osmosis, final treatment in the pharmaceutical industry, and potable water applications for a wide range of feed sources in the municipal market. Hollow fiber multibore membrane is the most resilient and reliable membrane manufactured.