Range Explanation:
Hiring Range is an estimate of where you can receive an offer. The actual salary offer will carefully consider a wide range of factors, including your skills, qualifications, experience, education, licenses, training, and internal equity.
Pay Range is the entire compensation range for the position.
The first review of applications will be on 10/30/2026 .
Pima County Regional Wastewater Reclamation Department is seeking an Operations and Maintenance Supervisor I (O&M) to join our team. An Operations and Maintenance Supervisor is responsible for leading a team of O&M Technicians and safely operating and monitoring selected equipment involved in the treatment, processing, and resource reclamation of wastewater and biosolids.
In this role, you will ensure the continuity of wastewater treatment operations by performing preventive maintenance and adjustments to equipment and systems, including pumps, motors, blowers, chemical feed equipment, sludge equipment, and basic laboratory equipment. This position is also responsible for collecting and analyzing wastewater samples and recording data relating to the operations and maintenance of equipment and treatment processes.
The Pima County Regional Wastewater Reclamation Department manages treatment plants with permitted flows ranging from 15,000 gallons per day up to 50 million gallons per day. This position is expected to be located at the Mount Lemmon Facility in the scenic Santa Catalina Mountains north of Tucson, Arizona. If the unique challenges of effectively operating a small, manual, and remote treatment plant excites your interest, we invite you to apply.
Work assignments, shifts, and locations will vary depending on the department's needs and will be communicated to the incumbent by the supervisor/treatment management.
Essential Functions:
As defined under the Americans with Disabilities Act, this classification may include any of the following tasks, knowledge, skills, and other characteristics. This list is ILLUSTRATIVE ONLY and is not a comprehensive listing of all functions and tasks performed by incumbents of this class. Work assignments may vary depending on the department’s need and will be communicated to the applicant or incumbent by the supervisor.
Supervises and performs all duties and responsibilities of the WW O&M Technician or Utility Maintenance Workers-all Levels; Supervises, monitors, evaluates and troubleshoots/adjusts process control of treatment facilities and collection/conveyance system processes; Coordinates activities of wastewater crews in the repair and maintenance of sewer lines and other sanitary sewerage facilities, to include vector, odor and corrosion control; Supervises, plans, schedules and assigns and reviews work of assigned shift personnel; Supervises
and collects data related to the operations and maintenance of the work unit and prepares reports; Supervises, monitors, evaluates, troubleshoots and adjusts treatment plant equipment, machinery and processes involved in the treatment and processing of wastewater and its byproducts including solids, gas, service water and side streams to ensure permit compliance; Supervises, reviews, and participates in the collection and analysis of treatment process samples, reported data, and lab results, ensure proper process control; this
includes verifying laboratory equipment use, calibration and operational logs.
Orders equipment and supplies, including laboratory supplies; communicates with Division and/or Warehouse and/ or Buyer and/or Planner Scheduler regarding supplies, restocks supplies; Recognizes, monitors and reports hazards, effectively communicates and disseminates safety procedures and safety data sheets, conducts safety meetings to ensure operational readiness and cleanliness
Communicates effectively with team, other Supervisors, management; gives and follows written and verbal instructions, daily use of email communication, electronic logbook, spreadsheet data entry, tablet and other relevant computer software programs/applications.
Prepares daily, weekly and monthly plant highlight reports and other reports to management; creates &/or modifies data tables/spreadsheet to analyze and present data; may provide recommendations for capital asset expenditures; Supervises, participates, and coordinates maintenance and repair activities with other team supervisors, planner/scheduler, central maintenance supervisors and other work units; Provides field training/OJT to O&M Technicians, Utility Maintenance Workers and other O&M Supervisors; provides leadership, mentorship,
training to other operational staff, and conducts tours of facilities; Supervises, trains and evaluates assigned personnel; maintains documentation of assigned personnel training, performance, and evaluations; Uses advanced operating principles of facility Supervisory Control and Data Acquisition (SCADA) systems and computerized maintenance management systems; uses SCADA to remotely operate facilities when assigned to OCC; Assists Management with process control and optimization recommendations, including input on large scale projects
and the integration/optimization of new processes and equipment while maintaining current treatment efficiency and regulatory compliance; Uses advanced knowledge of mass balance techniques and solids handling including but not limited to solids and sludge concentrations, SVI, sludge age, anaerobic digestion and biogas production; Supervises and assists in the design, development and implementation of capital projects; Initiates the implementation of facility emergency plans and procedures; Creates and updates procedures, rounds,
risk/hazard assessments, safety and LOTO plans, etc. including SOPs, JHAs, and similar documents; Responds to calls/complaints and requests from the public, other County departments, local, state and federal agencies; Establishes or directs establishment and maintenance of work site traffic control measures to assure safety of workers and the public; Provides dispatch services and performs miscellaneous activities for the collection/conveyance system when assigned to OCC; Supervises and reviews the collection of data and information
pertaining to facility permits, prepares and reviews documentation pertaining to facility permits.
Minimum Qualifications:
- Possess current Arizona Department of Environmental Quality (ADEQ) certification(s) required for the position at time of application AND four years of experience in the operation of an advanced, complex wastewater/water facility, systems, or related industry/facility.
- (Relevant experience and/or education from an accredited college or university may be substituted.)
- Qualifying education and experience must be clearly documented in the "Education" and "Work Experience" sections of the application. Do not substitute a resume for your application or write "see resume" on your application.
- Preferred Qualifications : (Be specific in describing your experience in your application. Ensure the descriptions provided illustrate your competencies, specifically addressing the required and preferred qualifications.):
- Minimum one (1) year experience as a RWRD O&M Technician III.
- Minimum one (1) year experience as a supervisor, including managing team performance, duty/work assignments, training colleagues, etc
- Additional ADEQ certification/s (collections/water treatment/water distribution).
- Minimum three (3) years experience performing and tracking preventative maintenance at a wastewater/water facility or similar process using asset management software such as Maximo.
- Selection Procedure: Pima County Human Resources Department reserves the right to admit to the selection process only those candidates that meet the minimum qualifications. All applications will be assessed based on an evaluation of the listed education and experience. Candidates meeting the minimum qualifications may be further evaluated/scored against any advertised Preferred Qualifications. The hiring authority will interview and select the successful candidate from a referral list provided by Human Resources. Additional assessments/testing may be required as part of the selection process.
- Supplemental Information: Licenses and Certificates : Valid driver license is required at time of application. Valid AZ driver license is required at time of appointment. The successful applicant will be subject to a 39-month DOT Motor Vehicle Record review to determine applicant’s suitability to operate county vehicles in accordance with Pima County administrative procedures. Failure to obtain and maintain the required licenses and certifications shall be grounds for termination. Any offer of employment resulting from this recruitment is contingent upon Fleet Services’ review and approval of the candidate’s driving record. Depending on the area of assignment, all positions require either a valid Arizona Department of Environmental Quality (ADEQ) Grade 4 Wastewater Treatment or Wastewater Collection System Operator certification. Some positions require a Grade 1 Wastewater Collection certification. Some positions require an Arizona Commercial Driver’s license (CDL) with tanker endorsement. Failure to maintain required certification/licensure shall be grounds for termination. This position requires successful demonstration of internal O&M knowledge and skills within the probationary period.
