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Wastewater Treatment Plant Operator I or II; WWTP Op I or II

Job in Oak Harbor, Island County, Washington, 98278, USA
Listing for: City of Oak Harbor
Full Time position
Listed on 2026-07-13
Job specializations:
  • Maintenance/Cleaning
    Maintenance Technician / Mechanic, Wastewater Treatment
Job Description & How to Apply Below
Position: Wastewater Treatment Plant Operator I or II (WWTP Op I or II)

Wastewater Treatment Plant Operator

Join our City of Oak Harbor team to help build a legacy of commitment to excellence in diversity, equity, and inclusion in our vibrant waterfront community.

Wastewater Treatment Plant Operator I

Perform wastewater treatment operations, maintenance and other related duties. Assist in controlling flows, processing wastewater and maintaining regulatory and permit standards. Duties depend on weekly rotations and other assignments and include checking equipment, troubleshooting; collecting samples, performing laboratory tests, maintaining logs and records and assisting in responding to public inquiries.

Wastewater Treatment Plant Operator II

Functions as a journey level operator and performs advanced and specialized process control, operations, maintenance, and other duties at our M  plant, including duty calls, emergency services, flagging, safety awareness, customer service, and technical duties to control the flow and processing of sewage and maintain regulatory and NPDES permit requirements. Duties depend on weekly rotations and other assignments and include checking equipment, troubleshooting, modification of equipment, collecting samples, performing laboratory tests, maintaining and understanding logs and records.

You will be asked to assess and respond to public inquiries, assist in training, community tours and education and lead special projects.

Essential Job Functions

Work activities involve multiple skills and may include any or all of the following depending on area of assignment, crew needs, emergency services, special projects and seasonal factors:

  • Participate in on-the-job customer service, project training, work study and skill development functions.
  • Perform plant operations and maintenance duties to develop skills in process control, calculating chemical feeds, tracing plant flows, adjusting wastewater flows, using various type gates and valves, flow meters and related telemetry,
  • Monitor automated alarms and controls and assist in calibrating and maintaining electronic controls and flow monitoring devices.
  • Collect various process samples. Set-up, conduct and record laboratory tests such as temperature, settleable solids, residual chlorine, pH, alkalinity.
  • Gain experience with volatile acids, volatile solids, BOD, CBOD, Ammonia Nitrogen, Nitrite, Nitrate, gas analysis and bacterial tests
  • Assist in maintaining daily operations logs. Record meter and gauge readings, weather conditions, equipment malfunctions and related information.
  • Assist in maintaining electrical equipment and mechanical systems.
  • Perform treatment plant and collection system maintenance duties such as lubricating pump bearings, basic oil services, mechanical maintenance; clean, scrape and paint machinery, equipment and facilities. Under direction repair or replace valves, switches, motors and related equipment as required or assigned. Clean, sweep and mop office and restroom floors, wash windows as necessary.
  • Establish and maintain cooperative and effective working relationships with supervisors, co-workers, other departments and the general public using good judgment, tact and courtesy.
  • Respond to customer and public inquiries in a courteous manner. Assess concerns or complaints, problem solve or follow-up with customers or the public. Refer appropriate matters to the Lead Treatment Plant Operator.
  • Maintain and service division equipment.
  • Assist in the division public education and community service functions and conduct plant tours for citizens, schools, and other persons
  • Complete required safety checks following mandated procedures. Work in a safe and self responsible manner.
  • Qualifications & Requirements

    Experience and Training Requirements:

    • High school graduation/GED or equivalent, and
    • Minimum one (1) year of experience in a treatment plant, including customer service and problem solving, and
    • Must have and maintain a valid Washington State certification as a Group I Wastewater Treatment Plant Operator at the time of hire.
    • Must obtain CPR and Industrial First Aid certification within six (6) months of hire date, and maintain currency for the term of employment.
    • Must obtain a valid Washington State Department of Transportation certification in flagging, traffic control and safety within six (6) months of hire, and maintain currency for the term of employment.
    • Experience and familiarity with personal computers, printers and faxes, and software such as Excel, Word and Outlook.
    • Must have a valid Washington State Driver's License and a good driving record. Must provide a drivers abstract prior to hire.
    • Must pass criminal background and reference check prior to hire.
    • Must be able to obtain security clearance for access to the local Navy base.
    Working Environment & Physical Demands

    Work is performed under odorous, dirty and noisy conditions at the wastewater treatment plants and in the field, outdoors in all types of weather conditions involving risk of exposure to hazardous chemicals, electrical components, wastewater and…

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