Metropolitan Water Reclamation District of Greater Chicago

Operating Engineer I (#20006831)

General Statement

Under supervision, operates or assists in the operation of assigned mechanical equipment at a sewage treatment plant, sludge disposal facility or pumping station, and checks various components of the equipment for normal condition and operation.

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.

  • Operates or assists in the operation of assigned mechanical equipment at a water reclamation plant, pumping station or sludge disposal facility, and checks various components of the equipment for normal condition of operation.
  • Operates a variety of complex high pressure, high temperature and high speed process equipment, i.e., pumps, blowers, turbine/generator, boilers, centrifuges, digesters and auxiliary equipment and building environmental equipment.
  • Inspects the operating condition of assigned equipment throughout the plant for faulty operation, i.e., wear, high vibration, corrosion, and takes immediate corrective measures to maintain efficient operations.
  • Records meter, gauge and instrument readings.  Changes meter charts, keeps accurate operating logs and records, and makes reports.
  • Conducts work in a safe manner in accordance with established safety rules and procedures.

Other Job Functions

  • May supervise personnel within a sewage treatment facility or pumping station.  Consults with immediate supervisor with regards to personnel problems or abnormal condition of equipment.
  • Participates in special projects involving operational processes.
  • Inspects various causes of malfunctions in operating equipment.
  • Trouble-shoots causes of plant/equipment outages when time allows.
  • 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

  • Some knowledge of the operation and maintenance of pumps, motors and related electrical and mechanical equipment and of high pressure steam boilers.
  • Some knowledge of the occupational hazards and safety precautions of the work.
  • Ability to diagnose electrical and mechanical malfunctions of equipment.
  • Ability to read and interpret a large variety of measuring and testing devices connected with plant operations.
  • Ability to keep records and make reports.

Absolute Requirements

Must possess a City of Chicago Stationary Engineer's License.

Minimum Qualification Requirements

Graduation from a standard senior high school or the equivalent and three years of experience in pertinent operating work.


Additional experience may substitute for the required education on a year-for-year basis.  Successful completion of a recognized training program in the operation of stationary equipment may be substituted for the required experience on a month-for-month basis to a maximum of one year.

Promotional Requirement

  • One year of service with the District as a Fireman Oiler.
  • Civil service status as a Fireman Oiler.

CLASS: 20006831; EST: 1/1/1900;