Engineering News-Record
The Top 10 Biggest Wastewater Treatment Plants
The Top 10 Biggest Wastewater Treatment Plants
1. Stickney Water Reclamation Plant, Chicago. Capacity: 1.44 billion gallons per day. Owner: Metropolitan Water Reclamation District (MWRD). The Stickney WWTP, located on 570 acres in Cicero, Illinois, southwest of Chicago, serves 2.4 million people living in Chicago and 43 suburban communities. It consists of two plants the western plant which began operating in 1930, and the southwestern plant which entered service in 1939. The Mainstream Pumping Station, the largest underground sewage pumping station in the world, lifts sewage from a deep tunnel system 300 ft underground to the plant. The sludge from the plant is dried and pelletized by Metropolitan Biosolids Management, a joint venture of Biosolids Management and Veolia Water North America Operating Services, which received a 20-year contract to design, build, own, operate and maintain the pelletization plant.
Metropolitan Water Reclamation District

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