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.

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.

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