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Waste Water Treatment Plant: Nov 2011 effluent processed: 4,760,000 gallons	Waste Water Upgrade Fact Sheet 2010 Facilities Plan	City has been awarded a $700,000 grant from Oregon Development Block grant.  This grant is for final design of phase 1 of the sewer plant upgrade.

                     

The City of Canyonville provides wastewater collection and treatment services to the residents and businesses within the City's urban growth boundary (UGB).  By consistently and effectively providing these services, the City protects the water quality and supports the beneficial uses of the South Umpqua River.  The major elements of the City's wastewater infrastructure include the sanitary collection system and the wastewater treatment plant (WWTP).  The age and condition of the collection system varies as it was installed over time to serve the population growth.

The City of Canyonville has operated a Waste Water Treatment Plant at the existing site since 1955.  The original plant consisted of an influent pump station, headworks, combination primary and secondary clarifiers, trickling filter, and anaerobic sludge digester.  A major plant upgrade was initiated in 1979 consisting of modifying the influent pump station, constructing a new grit removal system, comminutor (sewage grinder), activated sludge aeration basins, new filter and secondary effluent pump station.  Also, converting the trickling filter into a chlorine contact basin and the existing dual clarifier into a second secondary clarifier.  Plant operators installed one new raw sewage pump and one new secondary effluent pump in 1996.  To enhance the capacity, performance, and reliability of the existing plant, a number of upgrades were constructed in 1998, including improvements to the RAS system, a diffused aeration system, piping changes to allow operation in plug flow mode, and associated electrical and control systems.

While the WWTP has generally served the City well over the years, many components have reached the end of their useful life.  In addition, the existing plant does not have adequate capacity to accommodate planned growth, nor can it comply with anticipated effluent quality limits.  There is a 2010 Wastewater Facilities Plan available for viewing that gives site maps, problems arising from the age of the plant and the need for a new facility.