The Water Pollution Control Facility (WPCF) is a fixed film, secondary treatment wastewater facility, utilizing Rotating Biological Contactors (RBCs).The facility was constructed in 1975 and upgraded in 2003. With the completion of the upgrade, the WPCF is now capable of providing full secondary treatment for an average daily flow of 1.7 Million Gallons per Day (MGD) and up to 4.7 MGD of flow (peak hourly), and provide primary treatment with disinfection for up to an additional 11 MGD of flows. Flows beyond 15.7 MGD will be discharged through the City's licensed CSOs.


Major treatment processes for the upgraded WPCF include influent pumping facilities; fine screening via a mechanically cleaned step screen with a backup manual coarse bar rack; grit removal via a two speed vortex system; primary treatment with two primary clarifiers; a storm flow treatment system that includes pumping, flow metering, primary treatment, disinfection, dechlorination and sampling facilities; a secondary treatment system which includes RBCs with the ability to be operated in a "hybrid" fashion (fixed film and supplementary suspended growth treatment), two final clarifiers, disinfection, dechlorination and sampling facilities; return and waste sludge pumping facilities; sludge handling system, which includes sludger storage, pumping and dewatering facilities; and a new instrumentation and control system, including a Supervisory Control and Data Acquisition (SCADA) system.