Empire Water Resource Recovery Facility

Location: City of Empire
Serves: 150,000 people
Discharges to: Mississippi River

Treatment: Advanced secondary with ultraviolet disinfection
Capacity: 24 million gallons per day 
Sewer pipes to facility: 16 miles 

Protecting public health and the environment

Built in 1979, the Empire Facility has doubled in size to meet the needs of the growing service area.

The facility provides advanced secondary treatment with ultraviolet disinfection before discharging the resulting clean water to the Mississippi River. Solids removed from the wastewater are thickened, anaerobically digested, dewatered, and dried to be spread as fertilizers on nearby farmlands. This land spreading generally happens in autumn.

The Empire Facility has an excellent environmental record and regularly earns state and national awards for operational excellence. It has earned a National Association of Clean Water Agencies Platinum Peak Performance Award for perfect clean water discharge permit compliance across multiple consecutive years.

Safely moving wastewater

Wastewater from Empire is transported through 16 miles of regional sanitary sewer pipes (interceptors) to the facility.

Communities the Empire Facility serves

Apple Valley
Elko New Market    
Empire Township
Parts of Lakeville and Apple Valley 

Unique features of the Empire Water Resource Recovery Facility

  • ‚ÄčEmpire utilizes stormwater management best practices, including permeable pavers, green roof, and infiltration basins
  • The facility is equipped with solar panels, biosolids pads, and a combined heat and power generator

General Inquiries

[email protected]