• Huether Family Aquatics Center

    Construction - July 1, 2020

  • Huether Family Aquatics Center

    Construction - July 1, 2020

  • Walnut Street

    Newly completed Walnut Street project

  • Yankton 4th of July Fireworks

    Yankton's annual 4th of July fireworks show over the Missouri River.

  • Meridian Bridge

    Winter Scene

  • Fire Prevention Week

    Fire Prevention Week

  • Lewis & Clark Lake

    Lewis & Clark Lake

  • Jim River Bridge

    Jim River Bridge

  • Lake Area Trail

    Lake Area Trail

  • Meridian Bridge Moonlight

    Meridian Bridge Moonlight

  • Lewis & Clark Recreation Area

    Lewis & Clark Recreation Area

  • Walnut Street

    Walnut Street

  • Bragging Rights

    Bragging Rights

  • Downtown Streetscape

    Yankton's Downtown

  • Lewis & Clark Lake

    Missouri River Bluffs

  • 4th of July

    4th of July Fireworks Show

  • Riverside Park

    Riverside Park

  • Meridian Bridge Fog

    Meridian Bridge Fog

  • Meridian Bridge Winter

    Meridian Bridge Winter

  • Meridian Bridge Fall

    Yankton Meridian Bridge Fall

  • Lewis & Clark Lake

    Lewis & Clark Lake walking trails.

  • Rockin' Ribfest

    June 3-4

  • Yankton Marina

    Yankton Marina

  • Yankton Missouri River

    Yankton Missouri River

  • Fishing the Missouri

    Missouri River Yankton

  • Meridian Bridge

    Meridian Bridge

  • Ice Sailing

    Missiouri River Ice Sailing

  • Yankton Riverside Park Winter View

    Yankton Riverside Park Winter View

  • Missouri River Yankton

    Merry Christmas

  • Yankton Discovery Bridge

    Yankton Discovery Bridge


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The City of Yankton operates a Wastewater Treatment Plant utilizing the best available tools and technology to carefully collect and treat wastewater while protecting public health and natural resources.  A dedicated staff of certified professionals operate the plant through continuous testing and adjustment of sixteen treatment components.

Many miles of sanitary sewer lines and several pumping stations keep wastewater flowing to the treatment facility located at 600 Levee Street.  The facility has an average day design flow of 2.55 million gallons per day with an average daily flow of 1.9 million gallons.  

In order for the Wastewater facility to stay in compliance, the treated effluent water must meet standards set by the United States  Environmental Protection Agency and the South Dakota Department of Environment and Natural Resources.

Required testing involves TSS (total suspended solids), BOD (biochemical oxygen demand), Total Coliform, E. coli, Oil & Grease, pH units, Dissolved Oxygen, Water Temperature, WET testing (Whole Effluent Toxicity) and annual metals testing.

The facility consists of the following processes to treat the City’s wastewater before it is safely discharged to the Missouri River:

  • Screening and grit removal
  • Primary clarification
  • Aeration basins for secondary treatment
  • Secondary clarification
  • Ultraviolet disinfection
  • Dewatering
  • Two stage digestion
  • Sludge lagoons/land application

Kyle Goodmanson, Director of Environmental Services 
315 West Riverside Drive
PO Box 176
Yankton, SD 57078
Phone: (605) 668-5270