The City of Owatonna provides wastewater treatment that results in high-quality return flows to the river. The wastewater collection within the city is accomplished through approximately 200 miles of collection lines with some lines dating back to the early 1900s. The collection system functions primarily by gravity flow; however, lift stations are utilized at some points along the system.
The City of Owatonna’s treatment plant was built in 1987. The average daily flow through the wastewater system is approximately 3.5 to 4.0 MGD with the maximum peak daily flow of 10 MGD.
As a property owner, you own your sewer service from the building to the City sewer main. The City owns and maintains the sewer main, which is generally located in the middle of the street. The City cleans and inspects the main lines according to the Owatonna Sanitary Sewer Maintenance Policy. Maintenance crews use a high-pressure jet of water to clean the walls of the sewer main and push material and debris downstream where it can be removed at a manhole.