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Water Operator Trainee Jobs in Missouri (NOW HIRING)

City of Springfield, MO

Plant Operator II

Springfield, MO · On-site

$39K - $66K/yr

The City of Springfield is committed to protecting the water quality of the Ozarks for many ... Plant Operator Trainee Experience, Education, and Training * At least six months of experience in ...

Resource Label Group

Flexo Press Operator Trainee

Nixa, MO · On-site

$19 - $25.25/hr

The Press Trainee will assist in set up and operation of the printing press to producing labels on ... and water-based inks on 7" to 17" presses with up to 10 color stations. RESPONSIBILITIES:

US Department of the Army

Power Plant Trainee

Warsaw, MO · On-site

$37.72/hr

... Operator, Power Plant Electrician, Power Plant Mechanic, or Power Plant Electronics Mechanic ... water, heat and cold, odors, fumes, and moving and/or energized equipment. Occasionally works in ...

City of Joplin, MO

Firefighter/EMT Trainee

Joplin, MO · On-site

Performs a variety of fire suppression activities at the fire scene including deploying hose lines, operating nozzles, directing water streams, and raising and climbing ladders; utilizes a variety of ...

pcg

Regional Craft Employment - North Central

Lenexa, KS · On-site

$1.2K - $1.5K/wk

Helper/Laborer/Trainee/Utility : Prepares work area by transporting needed tools and equipment from ... Operator : An operating engineer's job entails operating and maintaining heavy equipment, such as ...

All JobsWater Operator JobsWater Operator Trainee JobsWater Operator Trainee Jobs in Missouri

Water Operator Trainee information

See Missouri salary details

$23.9K

$40.8K

$59.6K

How much do water operator trainee jobs pay per year?

As of Aug 18, 2026, the average yearly pay for water operator trainee in Missouri is $40,832.00, according to ZipRecruiter salary data. Most workers in this role earn between $31,000.00 and $47,800.00 per year, depending on experience, location, and employer.

What is a water operator trainee?

Water Operator Trainees are entry-level professionals who assist in the operation and maintenance of water treatment facilities. They work under the supervision of certified water operators to learn how to monitor, test, and ensure the quality and safety of public water supplies. Their responsibilities often include collecting water samples, recording data, performing basic laboratory tests, and learning about regulatory compliance. This role is designed to provide hands-on experience and training required to become a licensed water operator.

What are the key skills and qualifications needed to thrive as a water operator trainee?

To thrive as a Water Operator Trainee, you need basic math, science knowledge, mechanical aptitude, and a high school diploma or equivalent. Familiarity with water treatment equipment, monitoring systems, and the pursuit of a state-issued water operator certification are typically required. Strong attention to detail, problem-solving, and teamwork skills help you excel in monitoring and maintaining water quality standards. These competencies ensure safe, efficient operation of water facilities and compliance with regulatory requirements.

What are some common challenges faced by water operator trainees during their initial training period?

Water Operator Trainees often face challenges such as adapting to the technical complexity of water treatment systems, learning to accurately monitor and adjust equipment, and understanding strict safety and regulatory requirements. Trainees must quickly become familiar with both manual and automated processes, as well as handle emergency situations like equipment malfunctions or water quality concerns. Support from experienced operators and ongoing hands-on training are key to overcoming these hurdles and building competence in the role.

What is the difference between Water Operator Trainee vs Water Operator?

AspectWater Operator TraineeWater Operator
CertificationsTypically requires a high school diploma and may need a state-specific water treatment or distribution certificationRequires a valid water treatment or distribution certification, often obtained after training
Work EnvironmentSupervised, entry-level role in water treatment plants or distribution systemsFull responsibilities in operating, maintaining, and monitoring water systems
Job ResponsibilitiesAssisting with daily operations, learning procedures, and gaining experiencePerforming routine maintenance, monitoring equipment, and ensuring water quality

The main difference between a Water Operator Trainee and a Water Operator is experience and certification level. Trainees are in learning roles, often requiring supervision, while Water Operators have completed necessary certifications and handle full operational duties independently.

Are water operator trainees in high demand?

Water operator trainees are in steady demand due to ongoing needs for water treatment and distribution, especially as many facilities seek to meet regulatory standards. The role often requires certifications and technical skills, and employment opportunities are generally stable in the water utility industry.

Is being a water operator trainee worth it?

A water operator trainee position provides hands-on experience in water treatment and distribution, often serving as a stepping stone to certification and full licensing. It offers practical skills, knowledge of safety protocols, and job stability, making it a valuable entry-level role in the water industry.

What are the most commonly searched types of Water Operator jobs in Missouri?

The most popular types of Water Operator jobs in Missouri are:

What are popular job titles related to Water Operator Trainee jobs in Missouri?

For Water Operator Trainee jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Water Operator Trainee jobs in Missouri look for?

The top searched job categories for Water Operator Trainee jobs in Missouri are:

Water Operator Trainee jobs near you
Infographic showing various Water Operator Trainee job openings in Missouri as of August 2026, with employment types broken down into 55% Full Time, 43% Part Time, 1% Contract, and 1% Nights. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $40,832 per year, or $19.6 per hour.

Treatment Plant Operator Trainee I

Metropolitan St. Louis Sewer District

Saint Louis, MO • On-site

$55K - $60K/yr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description


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.
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 DemandsWork Environment
About Us
The Metropolitan St. Louis Sewer District provides comprehensive wastewater and storm water management services to residents and businesses in both St. Louis City and County. As one of the most recognized employers in the region and a fixture in the downtown area, MSD employs over 900 individuals in a wide-range of roles including skilled crafts and laborers, engineering, information technology, finance, human resources and administration support. We invite you to be part of the team!

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