New: The City of Willmar provides an RV Dump Station at its NEW Wastewater Treatment Plant located at 3000 75th Street SW, Willmar, MN.  This RV Dump Station is available for use Monday through Friday, 7 a.m. to 3 p.m.
There is no charge for this disposal.  Questions regarding disposal at this RV Dump Station will be taken at (320) 235-4760.
                     
 - Kandiyohi County Residents can now dispose of cooking oils FREE at the Willmar Wastewater Treatment Facility.  Click here for more information.

New Wastewater Treatment Plant Reference Documents

Plant Staff:

  • 1 Superintendent                       
  • 1 Working Foreman
  • 1 Mechanic
  • 1 Lift Station Mechanic
  • 1 Lab Technician
  • 1 Biosolids Coordinator
  • 1 Assistant Lab Technician/Safety Coordinator
  • 4 Operators

The plant consists of the following:

  • Influent flow meter
  • Screening-coarse/fine and grit removal equipment
  • Raw sewage and excess flow pumps
  • Excess flow storage
  • Primary clarifiers
  • Trickling filter
  • RBC's (32)
  • Final clarifiers (2)
  • Disinfection and Effluent Pumps
  • Gravity thickener
  • Anaerobic Sludge Digestion Facilities
  • 1.9 mg underground sludge storage tank
  • Odor control units for the screenings building, primary clarifiers, RBR's and gravity thickener
  • Earthen Biofilter to scrub odors from the trickling filter
  • SCADA system

Plant design parameters:

Annual Average Flow 4.32 mgd
Design Average Flow 5.04 mgd
Peak Flow 8.64 mgd
TBOD5 10,800 lbs/day
TSS 13,500 lbs/day

Other facts:

  • The plant is classified as a Class A Facility
  • There are 16 lift stations throughout Willmar and 9 located around Eagle Lake
  • There are 82.36 miles of gravity sewer lines and 7.93 miles of force mains
  • In 2007 the City land applied 559 dry ton of biosolids or 4,450,000 gallons to MPCA approved farm fields
  • The City reserves approximately 2,200 acres of farm land for application of biosolids
  • The major industry is Jennie-O Turkey Store which is a turkey kill/processing plant. They treat their waste prior to discharge to the WWTP via DAF
  • The WWTP has an RV dump station open daily from 7 a.m. to 3 p.m. free of charge
  • To contact the Waste Water Treatment plant, call (320) 235-4760.

               

          

                    

       

                            Willmar Wastewater Treatment Plant-3000 75th Street SW, Willmar, MN