The City of Davenport Water Pollution Control Plant is one of the largest Wastewater Treatment plants in the State of Iowa, serving the cities of Davenport, Bettendorf, Panorama Park and Riverdale.
As a Grade IV activated sludge plant, it consists of preliminary, primary and secondary treatment of wastewater with digestion and composting of the biosolids that are produced.
The annual average wastewater flow through the plant in 2015 was 26.8 million gallons per day (MGD); during heavy rains, or flooding situations, the flow can reach 60 MGD. The incoming wastewater in 2015 contained an average of 160 mg/l of BOD and 183 mg/l of TSS. The outgoing effluent averaged 6 mg/l of CBOD and 9 mg/l of TSS.