Water System Operator – Treatment

September 1, 2023
San Luis, AZ
Job Type


Under immediate supervision performs basic inspection, maintenance, and repair of water treatment plant.

  • Assists with the operation, maintenance and control of water treatment plant including the operation of valves, gates, pumps and machinery and filtration systems.
  • Assist with basic electrical and mechanical troubleshooting.
  • Assists with ensuring treatment plant operations are performed in accordance with quality standards, and safety regulations and procedures; and that they meet Local, State and Federal regulations pertaining to the production of potable water.
  • Assists with observing variations in operating conditions, interpreting meter and gauge readings, and reporting animalities to Supervisor/Chief Operator.
  • Assist with water sampling by collecting, labeling, and documenting water samples for laboratory testing and performs simple tests on water.
  • Applies and properly disposes of chemicals, pesticides, disinfectants, and oxidizing agents encountered in duties.
  • Performs other related duties as assigned.

Under general supervision performs all the essential functions of Operator Level I, at a higher skilled level,
in addition to the following essential duties:

  • Perform process control interpretation.
  • Perform laboratory practices, instrumentation and chemicals handling.
  • Conduct intermediate mechanical and electrical troubleshooting.
  • Maintain understanding permitting requirements from ADEQ.
  • Maintain recordkeeping in excel spreadsheets, charts and log sheets.
  • Perform plant equipment maintenance.
  • Performs other duties as assigned.

Under general supervision functions in a lead capacity, guiding lower-level operators, providing instruction, training, and assessing performance in addition to the following essential functions:

  • Leads operators on tasks of a more complex and progressively responsible level and monitor their performance.
  • Compiles data on daily, weekly and monthly basis; tracks logs; perform complex data interpretation and prepares reports.
  • Perform complex water treatment quality assessments.
  • Locate water lines, manipulate valves and install water hydrants.
  • Instruct, adjusts and test flow, sampling and metering equipment.
  • Monitor water wells, test for chlorine and collect and record daily readings.
  • Monitor proper traffic control.
  • Manipulate water system appurtenances.
  • Prepare draft plans for special projects.
  • Perform adjustment of process controls.
  • Assures compliance with Federal, State and local regulations.
  • Participates in budget preparation and records data on various spreadsheets.
  • Performs other duties as assigned.

Will possess knowledge of:

  • City policies and procedures
  • Methods, materials, tools and equipment used in the operation of water treatment plant.
  • State and Federal laws and regulations governing potable water treatment plant and emergency response.
  • Safe work practices and occupational hazards
  • Basic operational practices and principles of conventional water treatment processes
  • Advanced water treatment processes such as membrane filtration plants
  • Laboratory practices to properly evaluate treatment processes such as DO, pH, jar test, CL2 residual, turbidity, color, hardness, TSS, TDS, etc.
  • Chemical/physical processes used in water treatment processes such as coagulation, flocculation, settling, sedimentation, filtration, and disinfection
  • Mechanical and electrical trouble shooting
  • OSHA guidelines related to treatment facilities
  • Microsoft Office products

Will have the ability to:

  • Use and maintain tools and equipment to perform maintenance and repairs
  • Successfully pass the medical assessment as part of the City of San Luis Respirator Program.
  • Complete mathematical calculations and draw logical conclusions.
  • Make routine operating adjustments and repairs to equipment.
  • Follow safe work practices, and verbal and written instructions.
  • Inspect and monitor machinery and equipment to verify compliance with prescribed operating conditions and safety standards.
  • Establish and maintain collaborative working relationships with others.
  • Operate a personal computer utilizing standard and specialized software.
  • Communicate effectively verbally and in writing.
  • Be subject to call back, overtime, and weekend/holiday emergency callouts and on-call duty.



  • High school diploma or GED equivalent
  • Valid Driver's License at the time of application and must be maintained throughout employment.


  • one (1) year of experience in plumbing and/or construction experience.
  • Satisfactory completion of the one-year Water Apprenticeship Program can suffice the required one year of experience for Level I.
  • Arizona Department of Environmental Quality (ADEQ) Water Treatment Certification at the appropriate level and must be maintained throughout employment.
    • Grade I - attain within 6 months of employment as Level I Operator. Must possess ADEQ Water Treatment Grade I Certification at time of application.


  • Two (2) years of experience in a water treatment plant operation.
  • Arizona Department of Environmental Quality (ADEQ) Water Treatment Certification at the appropriate level and must be maintained throughout employment.
    • Grade II


  • Three (3) years of experience in a water treatment plant operation.
  • Arizona Department of Environmental Quality (ADEQ) Water Treatment Certification at the appropriate level and must be maintained throughout employment.
    • Grade III


The City of San Luis is committed to Professional Growth and Career Development -

Current employees may be given preferred consideration if they meet the position's minimum requirements.

OPEN UNTIL FILLED - Applications review will begin July 28 , 2023.

Candidates deemed to have the most relevant backgrounds will be invited to participate in the interview/assessment process.

The City of San Luis offers the following benefits to all full-time City employees:

MEDICAL/ DENTAL/ VISION INSURANCE - The City of San Luis is proud to provide medical, dental and vision insurance for it's employees which is administered by 90Degree Benefits. Dependent premiums are paid one month in advance and are pre-taxed. Additional information regarding medical, dental and vision benefits may be requested from the Human Resources Department.

ARIZONA STATE RETIREMENT SYSTEM (ASRS) - City employees are required to enroll in the Arizona State Retirement System.

  • Employee Contribution - 12.03%
  • Employer Contribution - 12.03%


  • Employee Contribution - .014%
  • Employer Contribution - .014%


FICA (Social Security Tax) - Employee Contribution - 6.20%
Medicare - Employee Contribution - 1.4500%.


Vacation Leave Accruals (Based on years of service and accrued on bi-weekly basis)
Less than 6 years - 3.08 hrs. 6 - 11 years - 4.62 hrs. 11 years or more- 6.16 hrs. Sick Leave - 3.69 hrs.

LIFE INSURANCE - The City provides eligible employees with a Life Insurance and Accidental Death and Dismemberment (AD&D) benefit. This plan is administered by Standard.

Basic Life Benefit - $50,000.00
AD&D Benefit - $50,000.00

DISABILITY INSURANCE - Disability insurance is available to all employees who work 30 or more hours per week.

Short-Term Disability - Coverage begins on the 15th day of injury or sickness.
Duration of Benefits - 180 days
Benefits Percentage- 66.67%
Waiting Period - 14 days
Maximum Weekly Benefit: $2,000.00

WORKER'S COMP - Insurance coverage for medical expenses and loss of income due to an on-the-job injury is provided by the City of San Luis for all employees.

Closing Date/Time: 10/31/2023 11:59 PM Arizona

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