The mission of the Wastewater Department is to protect public health and safety by providing professional and efficient maintenance and operation of the wastewater system in a manner that takes into account the requirements of the Arizona Department of Environmental Quality, direction of the City Manager, City Council, and the desires of the citizens of Sedona, as well as the professional standards governing wastewater system operations.
Sedona's wastewater system
The wastewater system has three parts: wastewater collection , wastewater treatment , and management of the effluents and solids resulting from the treatment process. Pumps, manholes, and pipes are the components of the wastewater collection system, and they are used to transport wastewater from homes and businesses in Sedona to the treatment plant located about five miles west of Sedona along SR 89A between Sedona and Cottonwood.
The treatment plant uses basins, pumps, pipes, and ultraviolet lights in its treatment process, which is called an activated sludge process. This is a biological treatment process which accelerates the decomposition of wastes in the water using natural rather than chemically based process. The process results is liquid (called effluent) and solids (called sludge). Management of these products involves the use of drying beds, centrifuges, large reservoirs, wetlands, and spray irrigations. Based upon tests conducted in 2013 injection of high quality effluent into the ground using wells will be used in the future.
In order to reduce the occurrence of spills and overflows of untreated sewerage, the city cleans and inspects sewer mains. The program consists of cleaning approximately 150,000 feet of sewer lines on an annual basis and inspecting the cleaned lines using a small TV camera.