Wastewater Treatment Plant Operator III

Open until filled with a 1st review date of September 15, 2026

This position is assigned to the Wastewater Treatment Division ONLY. Position requires a Grade 3 Operator Certificate within the discipline of Wastewater Treatment (WW) ivalent certifications from other jurisdictions may be considered; ADEQ reciprocity certification required within 60 days of hire.

Are you looking to join a team that values Professionalism, Accountability, Integrity, and Responsiveness? Do you want to be a part of a strong team dedicated to serving our community, building relationships, and creating opportunities? Then this might be the opportunity for you!

We are looking for someone to join Team Yuma as a Wastewater Treatment Plant Operator III, working with the department of Utilities. The ideal candidate will oversee and perform tasks involving the operation and maintenance of the City’s wastewater treatment plant equipment and processes.

Under general supervision this job classification performs mid to high journeyman-level operational tasks involved in the operation and maintenance of the City’s wastewater treatment plant equipment and processes. Provides daily leadership and direction for Wastewater Treatment Plant Operator Apprentice, I and II. Acts as the On‑Site Operator to verify compliance with State and Federal environmental regulations, and City policies, procedures and standards.

Essential functions, as defined under the Americans with Disabilities Act, may include any of the following representative duties, knowledge, and skills. This is not a comprehensive listing of all functions and duties performed by incumbents of this class; employees may be assigned duties which are not listed below; reasonable accommodations will be made as required. The job description does not constitute an employment agreement and is subject to change at any time by the employer.

Essential duties and responsibilities may include, but are not limited to, the following:

• Oversees the operation of plant equipment and processes related to water and wastewater treatment systems during an assigned shift in accordance with the strategies developed by the Operations Supervisor and Plant Superintendent, including the operation of ancillary facilities and equipment; duties may vary according to job assignment.
• Monitors Wastewater operations to verify treatment plant performance is stable, and in compliance with State and Federal environmental and safety regulations, and City policies, procedures and standards.
• Inspects all treatment plant equipment, and assures equipment is functioning within technical parameters.
• Monitors and evaluates Supervisory Control and Data Acquisition (SCADA) process control systems information; monitors data and error reports, evaluates operational and maintenance issues, and makes functional adjustments to treatment components within scope of authority and training.
• Identifies and diagnoses operational problems, discusses scope and attributes of problems with staff and management, and recommends alterations, adjustments, and procedural changes to correct problems and maintain system stability.
• Oversees treatment chemical and their uses; including making chemical feed adjustments, how to unload, store and uses various chemicals, i.e. sulfuric acid, caustic soda, and chlorine.
• Acts as the treatment plant Onsite Operator as defined by Arizona Department of Environmental Quality (ADEQ), and coordinates the activities of lower level operations staff; responds to operational incidents, and takes command when appropriate.
• Samples and analyzes influents/effluents, source water/product water, feed water and permeate to detect quality variations, interpret results, reading sheets, process test,…