Wastewater Treatment


The Coffee Creek Wastewater Treatment Plant, recognized in 2005, 2010, and 2015 as the Outstanding Large Plant from the Oklahoma Water Pollution Control Association. The plant is operated by a staff of seven water treatment professionals. Each staff member has earned licensing that meets or exceeds the requirements of the Oklahoma Department of Environmental Quality (ODEQ).

The Plant

  • Discharges treated water (called effluent) into Coffee Creek
  • Has a total design capacity of 9 million gallons per day
  • Uses a continuous flow activated-type process that utilizes oxidation ditches and aeration tanks for secondary treatment
During 2017, ODEQ conducted four plant inspections. The plant continued its record of 100% compliance with all regulatory parameters for wastewater treatment.

2017 Statistics

  • The plant processed 2,711,000,000 gallons
  • Total operations and maintenance costs were $2,988,658.00
  • Percent removal of major permitted parameters:
    • 5-day Carbonaceous Biochemical Oxygen Demand - CBOD5 – 98.49%
    • Total Suspended Solids - TSS – 98.20%
    • Ammonia - NH3 - 99.85%
  • Total Biosolids Land Applied - 11,237,800 gallons equal to 1,251 dry tons

Permit for Operation

The plant is operated under an Oklahoma Pollution Discharge Elimination System (OPDES) permit, issued by the Oklahoma Department of Environmental Quality (ODEQ). The treatment facility began operating under a new OPDES permit on August 1, 2015. The new permit will be in effect for 5 years. 

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