This presentation will discuss the operation of a 4 MGD pressurized two-stage Ultrafiltration (UF) plant over a 14 month period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility. The OMND Treatment Facility utilizes Ultrafiltration followed by low pressure Reverse Osmosis Softening to produce a blended Finished Water capacity of 3.6 MGD. Overall integrity performance of the plant for fourteen month period will be discussed in detail. Trans-Membrane Pressure (TMP), flux, temperature corrected permeability (specific flux) and cleaning efficiency for both the first and second UF stages will also be presented.