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