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Water Treatment Plant Supervisor I

City of St. Louis
St. Louis, MO Full Time
POSTED ON 12/9/2025 CLOSED ON 2/8/2026

What are the responsibilities and job description for the Water Treatment Plant Supervisor I position at City of St. Louis?

Description


Salary:
$58,214 - $79,430

Position Grade: 38T

Department: Water Division

Job Type: Full-Time Permanent

Examination Number: EX1525

Location: St. Louis, MO

Incumbents in this position are responsible for supervising Water Treatment Plant Operators and other maintenance personnel as well as performing duties to ensure the operation and maintenance of the Howard Bend Water Treatment Plant in order to purify drinking water for the City of St. Louis and surrounding communities. This position provides 24-hour emergency response.

Essential Functions and Responsibilities:

  • Maintains a comprehensive understanding of all operations associated with treatment of drinking water at assigned facilities. Includes obtaining and maintaining required certifications, and the ability to perform all duties assigned to subordinate personnel.
  • Maintains working knowledge of Federal and State Regulations associated with water plant operations, and plant-specific Standard Operating Procedures.
  • Maintains sufficient chemical inventory to guarantee continuous operation of water treatment process at all times. Includes all facets associated with ordering, delivery, receiving, storage, recordkeeping, etc.
  • Ensures operator compliance with standard operating procedures as related to all duties and tasks.
  • Maintains intimate knowledge and understanding of all mechanical systems utilized in water treatment facilities.
  • Maintains records, manuals and drawings necessary for use in upkeep and repair of water treatment equipment.
  • Keeps records/logs on activities of workforce.
  • Troubleshoots system malfunctions of operating equipment or facilities and effect necessary repair or correction.
  • Participates in supervision of the workforce necessary to operate and maintain water treatment plant facilities.
  • Supervises housekeeping duties of assigned facilities.
  • Directs and records preventive maintenance programs for all systems in the Coagulant House, Filter Plant, Chlorine Building and associated basins, clarifiers and pre-sedimentation units.
  • Assigns and directs personnel in the execution of operational and maintenance duties.
  • Procures materials and tools required to perform necessary maintenance and repairs to all equipment, including preparation of purchase requisitions, making emergency purchases, or writing technical specifications.
  • Functions as performance rater for all subordinate employees.
  • Provides training for all water treatment plant operators and plant operations assistants.
  • Implements prescribed flood control procedures when warranted by high river conditions.
  • Conducts safety meetings with members of designated work group.
  • Operates motor vehicles, welding equipment, torches, power and hand tools and other devices as required for the performance of job duties.
  • Participates in most levels of employee supervision, including enforcement of work rules, dispensing of disciplinary policy, performance counseling, etc.
  • Assists in development and upkeep of all standard operating procedures associated with the treatment facilities.
  • Assists with the Department of Personnel testing for the assembly of certified lists for various water operations and maintenance related job classifications.
  • In the event of an absence, performs all duties of the Water Treatment Plant Supervisor II.

Knowledge, Skills, and Abilities:

  • Data Utilization: Requires the ability to perform basic level of data analysis including the ability to review, classify, categorize, prioritize and/or reference data, statutes and/or guidelines and/or group, rank, investigate and diagnose. Requires discretion in determining and referencing such to established standards to recognize interactive effects and relationships.
  • Human Interaction: Requires the ability to persuade, convince, influence, train and monitor, in favor of a desired outcome. Requires the ability to sell. Requires the ability to act as a 1st level supervisor.
  • Equipment, Machinery, Tools and Materials Use: Requires the ability to operate, calibrate, tune and synchronize, and perform complex rapid adjustment on equipment, machinery and tools such as a calculator, hand and power tools, measuring instruments, pumps and/or related materials used in performing essential functions.
  • Verbal Aptitude: Requires the ability to utilize a variety of advisory data and information such as log sheets, blueprints, purchase orders, work reports, technical operating manuals, procedures, and nonroutine correspondence.
  • Mathematical Aptitude: Requires the ability to perform addition, subtraction, multiplication and division; calculate decimals and percentages; perform basic algebra.
  • Functional Reasoning: Requires the ability to apply principles of rational systems. Ability to interpret instructions furnished in written, oral, diagrammatic or schedule form. Ability to exercise independent judgment to adopt or modify methods and standards to meet variations in assigned objective.
  • Situational Reasoning: Requires the ability to exercise the judgment, decisiveness and creativity required in situations involving the evaluation of information against measurable or verifiable criteria.
  • Environmental Factors: Tasks may risk exposure to adverse environmental conditions, such as odors, wetness, humidity, fumes, noise extremes, machinery, toxic/poisonous agents, irate individuals or disease.
  • Physical Requirements: Requires the ability to lift, carry, push, and pull moderately heavy objects and materials, twenty to fifty pounds; and may occasionally involve objects and materials up to 100 pounds, such as lifting valve gates. Tasks involve the ability to exert regular and sustained heavy physical effort with an emphasis on climbing and balancing which also involves stooping, kneeling, crouching and crawling in order to perform maintenance duties.
  • Sensory Requirements: Requires the ability to recognize and identify similarities or differences between characteristics of colors, shapes, sounds, odors and textures associated with job-related objects, materials and tasks, such as mechanical trouble-shooting.

Qualifications


Three years of experience in the operation and maintenance of a surface water treatment facility. Qualifying experience must include utilizing computer databases, reading and interpreting equipment diagrams and construction drawings, experience with oxy-acetylene and arc welding, and the use of hand tools. OR an equivalent combination of training and experience.

Certification: Must possess a Class C Water Supply Operator Certification issued by the Missouri Department of Natural Resources. Proof of Class C Certification must be presented with the application or upon request.

License: Must possess and maintain a valid driver's license while employed by the City of St. Louis. Must possess a valid driver's license at the time of filing application and be able to present it upon request. Please note type of license, number, class and expiration date on the Employment Application. Only qualified applicants who provide proof of a valid driver’s license will be considered for this position.

Scoring Components and Their Weights
Experience and Training: 100%

Subject to:
Background Investigation: Pass/Fail

Medical Examination: Pass/Fail

Documentation of Academic Credentials must be Submitted Upon Request

When completing the Employment History and the Educational/Training History sections of the Employment Application, please be as thorough as possible when describing your education, training and experience relating to this position. Applicants will only receive credit for their experience, training and education as shown on the application. Resumes will not be accepted as a substitute to a fully completed application. Incomplete applications will not be considered.

Veterans Preference Points

To be eligible for veteran's preference points, the applicant must submit a copy of their DD 214 Certificate of Release or Discharge from Active Duty with the Employment Application or upon request. The Director of Personnel may, in their discretion, accept alternate documentation.

City Residence Preference Points

City residents who pass an examination for a position in the classified service and do not receive any other preference will receive a five (5) point preference on a scale of 100 points on the exam. An additional one (1) point shall be added to the passing score of City residents who receive any other preference on a scale of 100 points. City residents must have resided in the City for at least one (1) year at the time of filing their application to be eligible for the preference points.

Accommodations

If assistance with the job application is necessary based on a physical impairment, mental impairment, or otherwise, they should reach out to the Office on the Disabled with contact information. This office will not disclose any information that an applicant or employee has a disability or has discussed possible accommodations without the applicant's or employee's prior consent.


Job Posting: Dec 8, 2025, 3:04:18 PM

Salary : $58,214 - $79,430

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