Sanitary Sewer

Unincorporated Polk County operates and maintains a expanding network of public sanitary sewer mains.

The sanitary sewer system collects and carries wastewater from residential (sinks, toilets, showers and washing machines) and commercial and industrial sources through the County’s system.  The “wastewater” is conveyed to the Des Moines Metropolitan Wastewater Reclamation Authority's (WRA) Treatment Facility. The WRA consists of 18 metro area municipalities, counties, and sewer districts.

Polk County Sanitary Sewer Ordinance

Polk County Industrial Wastewater, Commercial Wastewater and Hauled Waste Ordinance

For questions about the sanity sewer system including availability of sanitary sewer for your property, future extensions, operations or maintenance please contact us at or (515) 286-3705.

WRA Industrial User Survey (required for all new Commercial and Industrial users connecting to sanitary sewer)

Much of Polk County is not served by sanitary sewer. Those areas not served by public sanitary sewer are served by Private On-Site Wastewater Systems (septic systems) permitted and inspected by Environmental Health Services.

NE 43rd Ave NE 7th Street - 2023 Sanitary Sewer Project 

  • Update:  The contractor has completed all underground utility work and pavement work.  All roadways are now open.  The contractor will be onsite for approximately 2 more weeks completing restoration work.  The contractor will return in the spring to address any final seeding if need be.

  • NE 7th Street will be closed starting October 23rd with an estimated duration of 3 weeks.  Access to driveways will be restricted for extended periods during this timeline.  NE 43rd Ave is estimated to open on October 27th - Details

  • On Tuesday, 10/3, the project will move into phases B and C along NE 43rd Ave.  The contractor will make best efforts keeping access to residential properties open.  The estimated duration is three weeks - Details

  • Construction to being August 21st - Notice