Newberg, Oregon, Phase 1 Reuse: Operational Findings Associated with Tertiary Membrane

The City of Newberg, Oregon, has developed a reuse system to address the limitations of a constrained potable water supply and the treatment requirements of a temperature total maximum daily load (TMDL) for the Willamette River. With this system, the City delivers reuse water to the Chehalem Glenn golf course. The City constructed a tertiary membrane filtration facility at its wastewater treatment plant (WWTP) in 2007/2008 to provide this water. This paper discusses operating data from the system including membrane filter performance metrics (flux rates, transmembrane pressures, recovery rates) as well as effluent quality (total coliform and turbidity). The City's reuse system frees up potable water resources, defers additional investment, and addresses receiving water temperature TMDL while enabling the golf course to obtain a sustainable irrigation source.