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7372-Stationary Engineer, Sewage Plant

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Stationary Engineer, Sewage Plant

Job classification

TitleStationary Engineer, Sewage Plant
Overtime eligibility Covered (Non-Z) - Nonexempt
Labor agreement Stationary Engineers, Local 39
Effective dateFebruary 11, 2014

Current compensation plan

Effective: Jan 06, 2024

See Historic and future compensation information for this class

Step: Step 1
Rate /hr: $62.2875
Rate /biweekly: $4,983.00
Rate /year: $129,558

Job description



Title: Stationary Engineer, Sewage Plant

Job Code: 7372


Under general supervision, during an assigned shift, is responsible for operating and maintaining a wide variety of complex machinery and equipment in a sewage disposal plant or pumping station, following established plant operations, methods and procedures; maintaining and preparing routine plant operations records and reports; and performs related duties as assigned.


Job code 7372 is a journey-level position in the Stationary Engineer series at the sewage plant, performing duties following established rules and/or procedures. This job code is distinguished from job code 7373 Senior Stationary Engineer in that the latter is required to supervise a work crew during an assigned shift, and personally participates in major or minor repairs of plant machinery and equipment.


May serve as acting supervisor during an assigned shift, in an assigned area of a sewage treatment plant.


According to Civil Service Commission Rule 109, the duties specified below are representative of the range of duties assigned to this job code/class and are not intended to be an inclusive list.

1. Makes regular visual, audio, olfactory and tactile inspections and/or manual tests of all plant machinery and equipment, including auxiliary equipment, in an assigned area or pumping station, maintaining logs and records of required maintenance, completed maintenance, equipment and work order history by taking periodic readings of gauges and meters to ensure that sewage plant is working safely, efficiently and properly; and to provide an accurate record of maintenance, preventive maintenance, equipment, and work order history.

2. Performs a variety of manual tasks requiring the handling of equipment exposed to raw sewage; collects and performs simple assessments of raw sewage and chemical samples on prescribed schedule at specific locations by making chemical and physical assessments to assess the efficiency of the treatment processes and to ensure compliance with the NPDES Permit (National Pollution Discharge Elimination System, Permit).

3. Operates, inspects, maintains, overhauls and makes major and minor repairs to wide variety of pumping, heating, ventilating, process machinery and equipment in a wastewater treatment plant or pumping station, including pumps, bar racks, grit collectors, conveyors and washers, chlorinators, evaporators and storage tanks, sludge collectors, drive units, deodorizing equipment and a wide variety of metering and recording devices to assure the safety and efficiency of equipment and facilities; includes lubricating and greasing machinery and equipment; cleaning and maintaining machinery, equipment and facility to ensure safety and equipment reliability.

4. Inspects sewage pipe lines, tanks and gates to check for the condition of equipment, for infiltration and blockage of debris and build-up of mineral deposits, etc., by draining tanks, by monitoring pressure and flow indicators and by visual inspection to determine any problem areas to ensure proper operation.

5. Operates, inspects and maintains solids treatment and flocculating chemical systems by monitoring and adjusting flow indicators or controllers, by visual inspection and by analysis of samples to ensure optimum treatment.

6. Operates, inspects and maintains disinfection and dechlorination systems by performing tests and analyzing sample to determine proper chemical dosages to ensure that effluent or final discharge meets Regional and State pollution control requirement.

7. May assist in training and in supervising work of apprentices or other trainees by oral instruction and hands-on demonstration in the operation and maintenance of sewage treatment processes to ensure competent performance of required skills by apprentices and other trainees.


Knowledge of: The operation, maintenance and repair of low pressure boilers, heat exchangers, hot water boilers, fans and blowers, heating and cooling coils and control valves, electric motors, non-electric prime movers such as turbines and internal combustion engines, various pumps and compressors, various equipment control devices, switches, circuit breakers, motors, and a variety of mechanical and electrical devices; shop practices and safety requirements; sewage treatment processes.

Ability to: Analyze, maintain and repair a variety of mechanical and electrical equipment; make repairs to plant machinery and equipment, and as necessary, maintain simple plant operating records; and communicate clearly and precisely and comprehend directions, both verbally and in writing.

Skills: Requires skill in the use of hand tools as needed in the maintenance and repair of equipment.

Positions located at the San Francisco Airport require technical knowledge and skill to conduct bacteriological and chemical tests of various stages of the sewage treatment processes.


These minimum qualifications establish the education, training, experience, special skills and/or license(s) which are required for employment in the classification. Please note, additional qualifications (i.e., special conditions) may apply to a particular position and will be stated on the exam/job announcement.

1. Four years of verifiable journey level Stationary Engineer, Plant Operator and/or Plant Mechanic experience in the operation, maintenance, and repair of a variety of mechanical and electrical pumping, heating, air-conditioning, ventilating, and related plant machinery of wastewater treatment plant; government establishment; hospital; industrial, production, or commercial building; OR

2. Completion of a recognized four-year stationary engineer Apprenticeship Program; OR

3. Graduation from a recognized four-year Maritime Academy with a degree in Engineering or technology; OR

4. Possession of at least a 3rd Assistant Marine Engineer's License of any unrestricted horsepower (experience as an Oiler or Firetender will not be accepted as qualifying); OR

5. Possession of a FAA Airframe or Power Plant Certificate and four years verifiable experience in an Airframe or Powerplant mechanic or maintenance technician capacity that utilizes the certificate; AND

6. Possession of a valid driver's license.


Grade I or higher California Wastewater Treatment Plant Operator Certificate, or Grade I or higher California Water Environment Mechanical Technology Certificate.


7373 Senior Stationary Engineer, Sewage Plant


AMENDED DATE: 10/22/99, 2/11/2014

REASON FOR AMENDMENT To accurately reflect the current tasks, knowledge, skills and abilities defined in the most recent job analysis conducted for this job code.


Standard information

Disaster service work

All City and County of San Francisco employees are designated Disaster Service Workers through state and local law (California Government Code Section 3100-3109). Employment with the City requires the affirmation of a loyalty oath to this effect. Employees are required to complete all Disaster Service Worker-related training as assigned, and to return to work as ordered in the event of an emergency.

Historic and future compensation

Effective (Sched) Step 1
Jan 06, 2024 (Y) $62.2875
Jul 01, 2023 (X) $60.9125
Jul 01, 2022 (W) $59.4250
Jan 08, 2022 (V) $56.4625
Jul 01, 2021 (U) $56.1875
Dec 26, 2020 (T) $54.2750
Jul 01, 2020 (S) $52.7000

Historic compensation data is provided in hourly pay.

Sources: San Francisco Open Data Portal: Compensation plan table