Septic Maintenance

The Zoning Department administers the Winnebago County Sanitary Ordinance and Chapter SPS 383 of the Wisconsin Administrative Code, which regulate the installation and maintenance of Private Onsite Wastewater Treatment Systems (POWTS), better known as "septic systems."  Both the Winnebago County Sanitary Ordinance and SPS 383 require that all septic systems, regardless of when they were installed, must be inspected/serviced a minimum of once every three (3) years.

Maintenance involves the visual inspection of the system by a licensed  plumber, pumper, or inspector, and includes pumping of the septic tank(s) and pump chamber (for dosing, in-ground, at-grade, and mound systems) by a licensed pumping service.  Your system may include an effluent filter on the outlet of the septic tank or may have a filter in the pump chamber.  If so, that filter must be cleaned.


View the following links for more information:


          Text Size

          • Increase
          • Decrease
          • Normal

          Current Size: 100%

          Zoning Department

          County Administration Building
          112 Otter Ave 3rd Floor
          Oshkosh, WI 54901
          Oshkosh:(920) 232-3344
          Neenah:(920) 727-2880
          Fax:(920) 232-3347

          Office Hours

          8:00am - 4:30pm, M - F

          Walk In Hours

          8:00am - 10:00am

          Mailing Address

          County Zoning Office
          Attn (list staff name)
          112 Otter Ave
          Oshkosh WI 54901