Metropolitan Water Reclamation District of Greater Chicago

Treatment Plant Operator I (#20006621)

General Statement

Under supervision, controls and coordinates the routine sewage treatment process operation on an assigned shift in 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.

  • Coordinates the wastewater treatment process and/or individual sections of the wastewater facility on shift, seeing that proper adjustments are made in order to maintain quality of effluent and to insure continuous operation of the plant.  Includes the manual operation of valves, gates, etc.  Must understand safety procedures and policies.
  • Maintains proper intake and collection system elevating including storm pumping station intakes as required for safe operation, including the successful operation of plant computer control systems.
  • Tours the wastewater facility and conducts first-hand inspection of all operating equipment during tour of duty to check operating performance.
  • Conducts, gives direction to, or oversees the collection of process samples, including transportation, and laboratory tests in order to insure an efficient and effective treatment process.
  • Maintains operating logs, completes daily treatment information sheets and prepares process data reports.
  • Gives direction to or oversees the work of laboring crews in the preparation of process units for operation and/or maintenance including treatment units, the collection system, and sludge modifying units.
  • Reacts in timely and efficient manner to treatment plant upsets and/or emergency conditions.

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

  • Some knowledge of the operating equipment used in the sewage treatment process.
  • Some knowledge of wastewater treatment standards according to EPA and NPDES guidelines.
  • Some knowledge of the operation and adjustment of mechanical pumps.
  • Some knowledge of the principles, procedures and processes of scum removal.
  • Some knowledge of laboratory measuring devices, instruments and sampling equipment.
  • Ability to read and understand a variety of dials, meters and gauges.
  • Ability to prepare and submit routine activity reports and to keep detailed logs of activities.
  • Ability to do moderately heavy manual labor.
  • Ability to plan and supervise the work of others in a manner conducive to full performance and high morale.

Minimum Qualification Requirements

Graduation from a standard senior high school or the equivalent and two years of sub-professional experience in engineering, scientific or treatment plant operations activities or two years of laborer 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 the required education and experience.

Promotional Requirement

  • None

CLASS: 20006621; EST: 1/1/1900; REV: 7/1/2012;