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Wastewater Treatment Operator​/Senior Operator - South Plant Ops

Job in Renton, King County, Washington, 98056, USA
Listing for: King County
Full Time position
Listed on 2026-09-25
Job specializations:
  • Maintenance/Cleaning
    Wastewater Treatment
Salary/Wage Range or Industry Benchmark: 57000 - 79000 USD Yearly USD 57000.00 79000.00 YEAR
Job Description & How to Apply Below
Position: Wastewater Treatment Operator/Senior Operator - South Plant Day Ops

This is a transfer opportunity, and first consideration is given to qualified transfer-eligible employees in the same classification. If no qualified transfer-eligible candidate is selected, external applicants will be considered.

three (3) position(s). In addition to the current opening, this recruitment may be used to establish a pool of qualified candidates to fill future Wastewater Treatment Operator (South Plant Day Ops)
Career Service vacancies within the Wastewater Treatment Division over the next 6 months.

External candidates are eligible to be hired at the Operator level only. Senior operator level is obtained through an internal job progression process. The salary range listed above includes the Operator level ($41.2077-$52.2331/hour) and Senior Operator level ($47.5058-$57.4309/hour).

There is always a demand for wastewater operators, and the industry is stable and growing. This is a dynamic career and is beneficial to the environment and community. There are plenty of opportunities for advancement within the division.

About the Role

Following and maintaining established safety policies, guidelines, regulations, and workplace standards. The O&M facilities are currently undergoing major capital improvements expected to continue over the next 10 years. The candidate will be a part of a flexible and dynamic team responsible for providing expertise and support to maintain continuous effective wastewater operations. The candidate will aid other plant staff, other King County staff, contractors and consultants as needed or required.

A successful candidate will maintain and strive toward intra-team and cross-team support and cooperation daily.

About the Team

King County protects water quality and public health in the central Puget Sound region by providing high quality and effective treatment to wastewater collected from our local sewer agencies. King County's wastewater operators not only help prevent the spread of many contagious diseases, but help the environment and the communities they reside in.

Commitment to Equity, Racial and Social Justice

King County, named after Dr. Martin Luther King, Jr., is a diverse and vibrant community that represents cultures from around the world. We prioritize equity, racial and social justice, making it a foundational and daily expectation for all employees. As a Wastewater Treatment Operator/Senior Operator, you will actively apply these principles in all aspects of your work. Learn more about our commitment at http://(Use the "Apply for this Job" box below)..

Enjoy training, comprehensive benefits, and growth opportunities.

What You Will Be Doing

As a Wastewater Treatment Operator:

  • Perform, facilitate, and communicate out the day-to-day task required to keep the treatment plant in compliance with the permits issued by the various regulatory agencies.
  • Operate, monitor, troubleshoot and maintain systems and processes in wastewater and stormwater facilities.
  • Conduct sampling and test analysis of wastewater and recommend changes to process to meet federal regulations and to optimize wastewater plant performance.
  • Perform maintenance on wastewater treatment plant and associated facilities, including buildings equipment, and grounds. Duties include cleaning, servicing operating equipment, mowing lawns, and performing housekeeping tasks.
  • Perform other duties as assigned.
What you Bring as a Senior Wastewater Treatment Operator – performs duties above plus
  • Serve in a lead capacity to operate, monitor, troubleshoot, and maintain wastewater treatment facilities, odor control equipment, biological, chemical, mechanical, and hydraulic processes. Provide advanced level troubleshooting, problem-solving, coordination and decision-making when performing duties, particularly in on-site,…
Position Requirements
10+ Years work experience
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