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Des Moines Metropolitan
Wastewater Reclamation Authority
3000 Vandalia Road
Des Moines, IA 50317

Plant Process

The 97 million gallon per day (MGD) wastewater treatment facility comprises more than half the $255,371,622 cost of the 15-year water pollution abatement program, one of the largest public works projects in Iowa history. State and federal grants funded just over 70% of the program cost. The program also includes interceptor sewers, equalization basins, and lift stations linking the communities in the WRA.

Please click on the links below to examine the plant processes


Maintenance Division

Mission Statement:

Provide maintenance support and services through heightened communications and total optimization of available resources, to predict and prevent equipment downtime in an efficient, safe and timely manner.

Operations Division

The WRF uses a combination of physical, biological, and chemical treatment processes to treat the wastewater as it flows through the plant.  These treatment processes are generally classified into the following categories listed below.
 - Influent Collection/Preliminary Treatment
 - Primary Treatment
 - Advanced Secondary Treatment
 - Disinfection
 - Waste Activated Sludge (WAS) Thickening
 - Anaerobic Digestion
 - Sludge Dewatering
 - Biosolids Land Application
These processes produce two byproducts:  high quality recycled wastewater discharged to the Des Moines River and treated biosolids that are land applied on farm fields for nutrient value and soil amendment.