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Treatment Plant Operator Trainee I

Metropolitan St. Louis Sewer District
St Louis, MO Other
POSTED ON 2/9/2026 CLOSED ON 3/14/2026

What are the responsibilities and job description for the Treatment Plant Operator Trainee I position at Metropolitan St. Louis Sewer District?

Overview

Essential Functions:

  • Support 24/7 operations.
  • As a trainee, operate, maintain, and adjust process systems and a variety of pumps, blowers, compressors, conveyors, sludge controls, air diffusers, filters, tanks, collectors, chemical equipment, mixer valves, incinerators, and other mechanical, instrumentation, computer process controls and electrical equipment.
  • Take samples of wastewater and other process flows and perform basic wastewater laboratory analysis.
  • Clean plant units such as bar screens, communutors, grit removal units, heat exchangers, aeration tanks, and equipment chlorinators, sludge pumps and pipe galleries.
  • Replenish chemical solution tanks, unloads chemicals, perform routine plant maintenance and cleaning work.
  • Operate electrical and computer controls, as needed.
  • Keep records.
  • Assist plant's trades employees.
  • Replenish chemical solution tanks.
  • Unload chemicals.
  • Perform routine plant maintenance and cleaning work.
  • Meet requirements of the Wastewater Operator Training Program.

Additional Responsibilities

Perform related work as required or as delegated by Senior Operators, Team Leaders, and Supervisor.

Responsibilities

Qualifications

Training And Experience

  • Graduation from high school, equivalent, or vocational school PLUS basic knowledge in the operation and maintenance of mechanical equipment.
  • Must be able to obtain a Missouri Class "D" wastewater treatment operator's license within 1 year of placement in this position.

Desirable Knowledge, Skills, And Abilities

  • Some knowledge of the operation and maintenance of pumps, motors, and related electrical and mechanical equipment.
  • Ability to use common hand tools effectively.
  • Working knowledge of safe work practices.
  • Ability to take accurate readings, keep records, logs, and make reports.
  • Ability to learn quickly and follow prescribed routines.
  • Ability to read, comprehend, and pass exams given on wastewater training program materials and manuals.

Special Requirement

  • Missouri Class "D" Wastewater Treatment Plant Operator's license must be obtained prior to progression to Treatment Plant Operator Trainee III.
  • Must possess a valid driver's license issued by the state in which the employee resides.
  • Pursuant to MSD's "Substance Abuse Policy and Procedures," this position has been designated as safety sensitive, and candidate must pass a Non-D.O.T. Drug Test for this position. Employees occupying this position are not subject to Federal (D.O.T.) Drug and Alcohol Testing Regulations
  • Employees of MSD must have a meets expectations.

Physical Demands

Work Environment

Salary : $55,411 - $60,549

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