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Metropolitan Wastewater Treatment Plant

Located on the Mississippi River in St. Paul, the Metro Plant is the largest wastewater treatment facility in Minnesota.

When it opened in 1938, it was the first plant in a metropolitan area on the Mississippi River. Today it is among the nation's largest, averaging 215 million gallons of wastewater every day from 62 communities and 800 industries.

The plant has an excellent environmental record and regularly earns state and national awards for operational excellence.

Wastewater Treatment Plant Information

• Located in St. Paul, Minnesota
• Type: Advanced secondary with chlorination/dechlorination
• Capacity: 251 million gallons per day
• Discharges to: Mississippi River
• Communities served: 62
• Population served: 1.8 million
• Interceptors to plant: 332 miles

For more information about the Metro Wastewater Treatment Plant,

please contact Tim O'Donnell at 651-602-1269 or at tim.odonnell@metc.state.mn.us