Metropolitan Water Reclamation District of Greater Chicago

Treatment Plant Operator II (#20006622)

General Statement

Under general supervision, has responsibility for the control of the routine sewage treatment process and coordination of sewage pumping and disposal operations associated with this process at a sewage treatment plant.

Essential Job Functions

Essential job functions are fundamental, core functions common to positions in a classification.  They are not intended to be an exhaustive list of all job duties for any one position in the class.  Since class specifications are designed to be descriptive and not restrictive, incumbents may complete one or all of the job duties listed or tasks of similar kind not specifically listed here.

  • Supervises or assists in the supervision of shift operators controlling the routine wastewater treatment processes, including training, and the coordination of wastewater pumping and treatment plus solids processing operations associated with the overall treatment process, including tours of the wastewater facility and inspection of operating equipment and operation of plant computer control systems.
  • Directs or coordinates the wastewater process, normally on a shift basis, seeing that proper adjustments are made in order to maintain quality of effluent and to insure continuous operation of the plant.  Includes the operation of valves and gates.  Must understand safety procedures and policies.
  • Directs the collection of process samples.  Determines or recommends process changes based upon current conditions and/or trends to insure an efficient and effective treatment process.  Must understand applicable effluent regulations and standards.
  • Coordinates or assists in the coordination of plant maintenance and construction project schedules to minimize tank outages and to insure the safety of all employees.
  • Completes written assignments including record keeping, description of malfunctioning equipment, performance appraisals, and daily operational and administrative records in a timely and proper manner.
  • Reacts in timely and efficient manner to treatment plant upsets and/or emergency conditions.

Other Job Functions

  • Coordinates sample transport including the operation of motorized vehicles.
  • Conducts special sampling and treatment evaluation programs as needed.
  • Occasionally manually operates gates, and valves.
  • Performs other duties as assigned.

Environmental Conditions

May involve exposure to a variety of operating mechanical equipment and loud noise and/or noxious odors.  May include working in all types of weather conditions throughout the plant facility and collection system.

Desirable Knowledge, Skills and Abilities

  • Considerable knowledge of the operating equipment used in the sewage treatment process.
  • Considerable knowledge of the operation and adjustment of mechanical pumps.
  • Considerable knowledge of wastewater treatment standards according to EPA and NPDES guidelines.
  • Some knowledge of laboratory measuring devices, instruments and sampling equipment.
  • Some knowledge of safety principles and practices.
  • Ability to read and understand a variety of dials, meters and gauges.
  • Ability to prepare and submit activity reports and to keep detailed logs of activities.
  • Ability to plan and supervise the work of others in a manner conducive to full performance and high morale.
  • Ability to identify noxious gases and oxygen deficiency.

Minimum Qualification Requirements

Graduation from a standard senior high school or the equivalent and six years of experience in sewage treatment plant operations at a facility with a Class I designation by the Illinois Environmental Protection Agency.


Full time study at an accredited college or university majoring in engineering or allied science may be substituted for the required experience on a year-for-year basis.  Completion of a comprehensive wastewater treatment plant operations course may be substituted for one year of the required experience.  Possession of a Class IV certificate of competency in wastewater treatment works operations issued by the Illinois Environmental Protection Agency may be substituted for two years of the required education and experience.

Promotional Requirement

  • One year of service with the District as a Treatment Plant Operator I.
  • Civil service status as a Treatment Plant Operator I.

CLASS: 20006622; EST: 1/1/1900; REV: 7/1/2012;