Wastewater Heavy Duty Maintenance Mechanic

Pima County; Tucson (AZ); On-site; USD 37,000 - 52,000; Full time

Job summary

Pima County's Regional Wastewater Reclamation Department seeks a dependable Heavy Duty Maintenance Mechanic to join the Wastewater Treatment Division. You will maintain, troubleshoot, and repair heavy industrial equipment, including pumps, blowers, conveyors, gearboxes, hydraulics, and related plant machinery, ensuring reliable operation and safe practices.

Candidates should have extensive mechanical maintenance experience with large equipment, the ability to read blueprints and schematics, and

Qualifications

• Five years of mechanical maintenance experience with large heavy‑duty industrial equipment.
• Three years of experience with Pima County as a Wastewater Maintenance Specialist II.
• Relevant education and/or experience may substitute.

Responsibilities

• Performs preventive maintenance and repairs on heavy‑duty industrial equipment and pumps.
• Interprets blueprints and diagrams to plan repairs.
• Coordinates with operations staff to minimize service disruption.
• Maintains records and prepares reports on equipment condition.
• Assists in on‑the‑job training of operators and maintenance staff.

Tools

CMMS

Excel

Word

Outlook

Visio

Job description

Job Description Summary

Department - Regional Wastewater Reclamation

Job Description

OPEN UNTIL FILLED

Job Type: Classified

Job Classification: 5581 - Wastewater Heavy Duty Maintenance Mechanic

Salary Grade: 11

Pay Range

Hiring Range: $27.19 - $32.63 Per Hour

Pay Range: $27.19 - $38.06 Per Hour

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.

Important: The first review of applications will be on 10/02/2026.

Pima County Regional Wastewater Reclamation Department is looking for a dependable, skilled, and motivated Heavy Duty Maintenance Mechanic to join its Wastewater Treatment Division, a dedicated team of professionals who keep essential infrastructure running safely and efficiently every day. This is an opportunity to build a stable, long-term career while serving the community and protecting public health. In this hands-on role, you will maintain, troubleshoot, and repair heavy industrial equipment such as pumps, blowers, conveyors, gearboxes, hydraulic systems, and other critical plant machinery. We are seeking candidates who take pride in their work, value safety, and enjoy working in a team-oriented environment where reliability and craftsmanship matter. Pima County offers competitive pay, excellent benefits, retirement plans, and opportunities for advancement and ongoing training.

Essential Functions

• Performs operational and preventive maintenance of complex heavy-duty industrial equipment and machinery utilizing hydraulics and pneumatics of systems involving pneumatic tanks, deep wells, air compressors, pneumatic actuators, wet wells, pumps and booster stations;


• Fabricates, constructs, installs, repairs and aligns heavy-duty industrial equipment and machinery such as deep well pumps, water pump and piping systems, horizontal and vertical drive centrifugal pumps, spherical, thrust, radial and line-shaft bearings on pumps and motors utilizing gas and electric welding;


• Performs critical repairs to complex systems, equipment and related features to maintain system integrity and functions in accordance with standards, rules and regulations, particularly those systems or equipment operated under permits or licenses granted by other governmental agencies;


• Interprets and applies required codes or standards to work situations;


• Interprets complex blueprints, schematics and diagrams to facilitate work;


• Prepares working sketches, drawings and estimates of resources required for assigned projects;


• Repairs or operates specialized equipment such as submersible pumps, speed increasers and decreases, blowers, conveyors, gear boxes, mixing equipment and industrial stationary engines;


• Demonstrates knowledge of precision measuring equipment such as micrometers and dial indicators;


• Coordinates equipment and system modifications or maintenance with operations and maintenance staff and supported facility managers or end-users, to assure minimal disruption of services and seamless customer services;


• Inspects, services and maintains common and specialized tools, equipment and vehicles used in performance of duties;


• Utilizes and ensures fellow staff utilizes standard occupational safety practices and equipment;


• Maintains comprehensive records of work performed, modifications to equipment or systems and related operations logs;


• Prepares periodic and special reports for management on equipment, systems and/or facilities supported or maintained;


• Conducts on-the-job training of operators and maintenance staff;


• May inspect and lead the work of equipment operators and maintenance staff.

Minimum Qualifications

Five years of mechanical maintenance experience in the fabrication, installation or repair of large heavy-duty industrial mechanical equipment, deep well turbine pumps, submersible or centrifugal booster pumps.

Or

Three years of experience with Pima County as a Wastewater Maintenance Specialist II performing mechanical maintenance work involving the fabrication, installation and repair of mechanical equipment and pumps.

(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

• Minimum six (6) years experience in industrial mechanical equipment, performing repairs and routine maintenance of industrial pumping systems, deep well turbine pumps, positive displacement pumps, submersible pumps, centrifugal pumps, booster pumps, gear boxes, plumbing, pipe fitting and compressor/blower maintenance.


• Minimum four (4) years experience in specializing and advanced maintenance repair, diagnose or trouble-shooting, construction, fabrication, on-the-job training, and preventative maintenance.


• Minimum four (4) experience using an industrial Computerized Maintenance Management Systems (CMMS).


• Minimum four (4) experience using Microsoft Office Suite, to include Excel, Word, Outlook and Visio.

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. 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.

Special Notice Items: The County requires pre-employment background checks. Successful candidates will receive a post-offer, pre-employment background screening to include verification of work history, education, and criminal conviction history. A prior criminal conviction will not automatically disqualify a candidate from employment with the County. Pima County determines whether a position is eligible for visa sponsorship at the time of recruitment. Eligibility is based on the requirements of the position and applicable laws and regulations. Not all positions with Pima County are eligible for visa sponsorship. This position will require a post-job offer physical and/or drug screen.

Physical/Sensory Requirements

Constantly operates and inspects mechanical equipment. Constantly positions self to use, inspect, clean or repair tools and machinery. Constantly observes details at close range. Frequently required to exchange accurate information. Frequently remains in a stationary position. Frequently moves tools and equipment weighing up to 50 lbs. Frequently operates a motor vehicle or golf cart safely and legally, in accordance with applicable state and federal transportation laws. Occasionally moves tools and equipment weighing up to 75 lbs. Occasionally ascends/descends machinery and equipment to repair/service. Frequently ascending and descending ladders and stairs to reach and work upon elevated or below-grade work platforms and job sites. Action Activity - bending, climbing, crawling, kneeling, reaching, squatting and stooping; Motion Activity - grasping and fine movement; Hearing Activity - in noisy areas, on a radio, behind themselves, and equipment alarms; Speaking Activity - in person, on the phone, on a cell, and on a radio; Vision - operate a motor vehicle; operate commercial vehicle, operate a forklift/power industrial equipment, distinguish colors, have depth perception, and peripheral vision. Frequently required to lift, push or pull objects weighing up to 100 pounds.

Working Conditions

Some positions may be required to go on an on-call rotation. Constantly exposed to loud noise levels. Constantly exposed to moving mechanical parts. Occasionally exposed to mechanical oils, vibration and risk of electrical shock. Working with or in the presence of obnoxious odors. Working with noxious or potentially hazardous chemicals, compounds or products. Constantly exposed to extreme heat. Occasionally confine space entry. Employees may be exposed to various weather conditions. Walking on uneven/slippery surfaces.

EEO Information

Pima County Government is an Equal Employment Opportunity employer. We are committed to an inclusive and diverse workforce and will not discriminate in employment opportunities or practices on the basis of race, color, religion, national origin, age, disability, gender, sexual orientation, kinship, political interest, or any other characteristic protected by law.