Sanitary Sewer Jetting/Cleaning
Jetting consists of using a "Jetter Truck" that carries 1,200 gallons of water and 600 feet of hose to clean sewer mains. The hose is fed down through a manhole into the main sewer lines. Once the hose is in place, a pump is turned on to send water through the hose and out a specialized jetting nozzle that operates at roughly 1200-1800psi. The nozzle is fed upstream to the next manhole (typically 300-350 ft runs) and then pulled back slowly to loosen up and remove the debris that are built up in the pipe. This debris ranges from wipes, sand/grit, grease, and solids. Once the solids are pulled back to the manhole, they are either flushed downstream or vacuumed out into the debris box of the Jetter/vac truck.
The city cleans 20% of the city sewer mains annually by working through these 5 zones. This approach allows staff to clean all main lines in a 5-year cycle.
City residents may experience gurgling noises and the occasional odor. Residents and business owners are advised to fill their drain traps after the jetting is completed in front of their house or business. The vacuum that is created during the cleaning process may pull water out of the traps leaving them dry, which can cause odors.
The 2024 Sanitary Sewer Cleaning is being completed in the Zone 2 section of town, as seen in this map.
Please call the Wastewater Treatment Facility at 507.444.2452 if you have questions or experience any issues.