Ultrafiltration/Microfiltration (UF/MF) plants can operate on feedwater from well water to surface water and even on wastewater sources. The advancement of today?s UF/MF technology has allowed water treatment plants to operate successfully on different water sources, each with a unique set of benefits and challenges. In this talk, numerous case studies will be compared on these diverse feedwater sources to highlight the impact on design, operating discipline, and performance.