Wastewater Plant Operator - Treatment

  • San Luis, Arizona
  • Dec 17, 2023
Full Time Construction and Skilled Trades Water and Wastewater Treatment
  • Salary: $17.49 - $24.00 Hourly USD Hourly
  • Salary Top: 24 USD Hourly

Job Description



As the Operator I, you will:
  • performs basic inspection, maintenance, and repair of wastewater treatment system.
  • Assist with the operation, maintenance and control of wastewater treatment plant including the operation of valves, gates, pumps and machinery.
  • Assist 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 treatment of sanitary wastewater.
  • Assist with sampling (Jar test) the influent and effluent at various stages of processing and identify problems and ensuring proper and efficient operation of the treatment plant.
  • Assist with observing variations in operating conditions, interpreting meter and gauge readings, and reporting anomalities to Supervisor/Chief Operator.
  • Assist senior level operators and mechanics to resolve operational problems.
  • Assist with conducting basic electrical and mechanical troubleshooting.
  • Clean and maintain plant work areas, tools and equipment and collect samples as instructed.
  • Maintain absolute confidentiality of work-related issues.
  • Perform other duties as assigned.
As the Operator II, you will:
  • 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.
  • Perform other duties as assigned.
As the Operator III (Lead), you will:
  • Lead capacity, guiding lower-level operators, providing instruction, training, and assessing performance in addition to the following essential functions:
  • Lead operators on tasks of a more complex and progressively responsible level.
  • Perform complex data interpretation.
  • Perform complex water treatment quality.
  • Perform adjustment of process controls.
  • Assure compliance with Federal, State, and local regulations.
  • Compile data on daily, weekly, and monthly basis; track logs; and prepare reports.
  • Participate in budget preparation and record data on various spreadsheets.
  • Assure compliance with Federal, State and Local Regulations.
  • Perform other duties as assigned.


Will possess knowledge of:
  • City policies and procedures.
  • Methods, materials, tools, and equipment used in the operation of wastewater treatment plant.
  • State and Federal laws and regulations governing wastewater treatment plant and emergency response.
  • Safe work practices and occupational hazards.
  • Basic operational practices and principles of wastewater treatment plant operations with basic troubleshooting knowledge.
  • Laboratory practices to properly evaluate treatment processes such as BOD, DO, pH, jar test, CL2 residual, turbidity, COD, color, TSS, TDS, fecal coliforms, etc.
  • Chemical/physical and biological processes used in wastewater treatment processes such as coagulation, flocculation, settling, sedimentation, filtration, disinfection and activated sludge.
  • 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 call-outs and call duty


All Operators:
  • High School Diploma or GED
  • A valid Driver’s License at the time of application must be maintained throughout employment.
  • Residency in the United States and within 25 miles from the City of San Luis.
  • Appropriate level Certifications as outlined under the Public Works Department - Water & Wastewater Succession Plan.
Operator I
  • One (1) year of experience in plumbing and/or construction experience.
  • Satisfactory completion of the one-year Wastewater Apprenticeship Program can suffice the required one year of experience for Level I.
  • Arizona Department of Environmental Quality (ADEQ) Wastewater Collection Certification at the appropriate level and must be maintained throughout employment.
    • Operator I: Grade I - attain within 6 months of employment as Level I Operator. Must possess ADEQ Wastewater Distribution Grade I Certification at the time of appointment throughout employment
Operator II
  • Two (2) years of experience in a wastewater systems treatment plant operation.
  • Arizona Department of Environmental Quality (ADEQ) Wastewater Collection Certification at the appropriate level and must be maintained throughout employment.
    • Operator II: Grade II - must possess at the time of appointment throughout employment
Operator III (Lead)
  • Three (3) years of experience in a wastewater systems treatment plant operation.
  • Arizona Department of Environmental Quality (ADEQ) Wastewater Collection Certification at the appropriate level and must be maintained throughout employment.
    • Operator III: Grade III - must possess at the time of appointment throughout employment

  • Bilingual in Spanish.
  • San Luis residency.



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

Applications will be reviewed weekly.

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

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

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: 3/29/2024 11:59 PM Arizona

Base Pay


Job Address

San Luis, Arizona United States View Map