Wastewater Treatment

The Wastewater Treatment Plant was originally built in 1959, and has undergone several improvements through 2009. The current plant processes are screenings, grit removal, primary clarification, trickling filters, aerated biological treatment, chlorine disinfection, anaerobic digestion, and a dewatering process. 

This Advanced Secondary Treatment facility is rated for 11 Million Gallons per Day (MGD) of treatment, but can treat a peak flow of about 32 MGD before discharging into the Muskingum River. Average daily flow is about 6 MGD. The plant is operated both manually and automatically through a Supervisory Control and Data Acquisition (SCADA) system.


The Wastewater Plant treats for specific types of waste, and must therefore control what is discharged to the collection system. These control mechanisms are found in the City’s Codified Ordinances, Chapters 922 and 923. A Pretreatment Program is operated to monitor discharges from businesses (mainly grease control) and industries. For questions about discharges to the sewer collection system, contact the Pretreatment Coordinator at the Wastewater Plant.

Wastewater Plant Personnel

The Wastewater Plant personnel are charged with the proper operation and maintenance of the equipment, and monitoring the processes and streams from them in order to meet the limits of the National Pollutant Discharge Elimination System (NPDES) permit.

Tours & Trainings

The Wastewater Division offers plant tours and classroom training. If you would like to schedule a tour, training, or if you have any questions, please contact the Wastewater Plant office during normal business hours.