Established: 08/90
Revised: 07/94
Reactivated and Revised: 06/01
FLSA: Non-Exempt
EEO: 7



Under general supervision, to inspect, maintain, and repair the machinery, equipment and instrumentation in wastewater treatment plants and pump stations; to perform preventative maintenance of wastewater facilities; and to do other work as required.


The Department of Water Environment Services manages and operates the County's utility service districts, including sewerage facilities, collection systems, pumping stations, treatment plants and surface water management.

The Wastewater Mechanic 1 assists in the maintenance and repair of machinery, equipment, and instrumentation at a wastewater treatment plant and for the wastewater collection system pump stations. The incumbents learn to perform electrical and electronic equipment and instruments.

The Wastewater Mechanic series is primarily oriented to performing responsible maintenance and repair activities at sewage treatment plants. The Wastewater Mechanic 1 differs from the Wastewater Mechanic 2 by performing less complex preventative maintenance and repair of sewage treatment plant and pump station facilities and equipment. The Wastewater Mechanic 1 learns to perform various maintenance activities including electrical and electronic equipment and instruments.


Duties may include but are not limited to the following:

  1. Assists in the installation, inspection, maintenance and repair of mechanical equipment and machinery, including valves, pumps, heat exchangers, blowers, clarifiers and chlorinators; examines, adjusts, lubricates and paints machinery and equipment; replaces worn and broken parts; fabricates and modifies parts and tools.
  2. Learns to install, inspect, maintain and repair building structures, systems and equipment, including heating, ventilating, air conditioning and water boiler systems; performs installations, inspections, maintenance, and repair of building structures, systems and equipment, such as heating, ventilating, air conditioning and water boiler systems.
  3. Learns to inspect, maintain, repair and replace electrical equipment and electronic instruments, including electric motors, motor control panels, electric monitoring and control systems, flow meters and temperature and level sensors; learns to examine, adjust and replace existing wiring, motors, fuses, starters, switches, alternators, generators, transformers, sensors and electronic components; monitors, calibrates and repairs programmable logic controllers and associated components.
  4. Participates in the development and implementation of a maintenance, repair and replacement program; prepares and maintains preventative maintenance manuals, schedules, records and work orders; evaluates facility condition to prioritize and schedule projects; assists in defining user requirements for the design and construction of wastewater facilities; evaluates cost effectiveness of equipment replacement or repair; maintains parts and supplies inventory.
  5. May serve as project or team leader on various assignments; serves as work group representative or contact person for limited remodeling, repair and improvement projects for wastewater facilities and mechanical systems; trains new and temporary employees; may provide group safety training; demonstrates safe working practices in the field.
  6. Performs general maintenance and preventative maintenance activities to keep the facility and equipment clean, neat and operational.
  7. Provides public and customer service support to County operations and other municipalities; responds to complaints and inquiries; conducts facility tours and public information meetings; answers technical questions and explains wastewater collection and processing systems.


Working knowledge of: Practices, procedures, equipment, and tools used in the maintenance and repair mechanical equipment, electronic instrumentation, and building systems; mechanical components such as gears, chains, belts, bearings and gaskets; methods and techniques of painting, carpentry, welding, metal fabrication, plumbing, pipe fitting, and electronic systems; Federal, State, and local rules and regulations applicable to safety and environmental compliance; basic math; English grammar, spelling and punctuation; standard office equipment, including microcomputers.

Some knowledge of: Practices, procedures and equipment used in the maintenance and repair of electrical equipment; basic principles and methods of wastewater collection, treatment and discharge.

Skill to: Coordinate completion of projects within established budget and time guidelines; communicate effectively, both orally and in writing; read and understand technical operations and maintenance manuals, blueprints and schematics; identify and correct mechanical malfunctions and failures; monitor instrumentation systems controlling chemical concentrations, digester heat and gas systems, sludge processing and other plant and collection system operations; remove disassemble, assemble and install machinery and equipment; calculate gear and drive belt ratios, belt lengths, and pulley diameters; safely operate steam cleaners, sand blasters, power tools, lathes, welders, drill presses, hand tools, and other shop equipment; learn maintenance and repair of electrical and electronic equipment and instruments; understand and comply with regulations, department safety and environmental rules and practices; prepare and maintain accurate records; establish and maintain effective working relationships with contractors, vendors, county employees and the public; learn to operate computer software applications and programmable logic controllers used in wastewater systems.


Incumbents are exposed to bacteria and viruses in wastewater and to hazardous chemicals used in the treatment process. Positions require frequent standing, bending, stooping, climbing, and walking and the ability to push, lift, pull and carry up to 75 pounds.


Incumbents may perform after-hours emergency response on a call-out basis.

Driving is required for County business on a regular basis or to accomplish work. Incumbents must possess a valid driver's license, and possess and maintain an acceptable driving record throughout the course of employment.


Any satisfactory combination of experience and training that would demonstrate possession of the required knowledge and skills. Desirable qualifications include a Limited Maintenance Electrician’s (LME) License.