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Plant Operator Apprentice Jobs in California (NOW HIRING)

Troubleshoot, repair, install and maintain all mechanical equipment in a chemical plant that ... Additional course work, technical training, apprenticeship, etc, is desirable. Pay: $39 per hour

Troubleshoot, repair, install and maintain all mechanical equipment in a chemical plant that ... Additional course work, technical training, apprenticeship, etc, is desirable. Pay: $39 per hour

FACILITIES MAINTENANCE LEAD

Long Beach, CA · On-site

$31.21 - $47.61/hr

... apprenticeship in one of the building trades (i.e. Carpenter, Electrical, HVAC, Refrigeration, Plumbing, Plant Operator, etc.) and a minimum of three (3) years Hospital/Healthcare Facilities ...

Job Summary: The Heat Treat Apprentice will learn how to prepare a load, how to load into and ... Support the Plant quality system goals / improvements & productivity goals / improvements within ...

... operating conditions and plant productivity. Maintenance Technician also assists with related ... apprenticeship program. Understands, adheres to, and reinforces EHS policies and directives.

... operating conditions and plant productivity. Maintenance Technician also assists with related ... apprenticeship program. • Understands, adheres to, and reinforces EHS policies and directives ...

Maintenance Mechanic

Livermore, CA · On-site

$43.60 - $52.99/hr

Work from drawings and verbal/written instructions to keep plant and research systems operating ... High school diploma or apprentice training completion or equivalent combination of education and ...

Showing results 21-40

Plant Operator Apprentice information

What is the difference between Plant Operator Apprentice vs Plant Operator?

AspectPlant Operator ApprenticePlant Operator
Required CredentialsHigh school diploma, on-the-job training, possibly technical certificationsHigh school diploma or equivalent, relevant certifications, experience
Work EnvironmentTraining sites, plant facilities, supervised environmentOperational plant settings, shift work, hands-on roles
Employer & Industry UsageUtilities, manufacturing, energy sectorsUtilities, manufacturing, energy sectors

The Plant Operator Apprentice is in training, gaining skills and certifications to become a fully qualified Plant Operator. The Apprentice role involves supervised work and learning, while the Plant Operator is fully responsible for operating equipment independently. Both roles are common in utility and manufacturing industries, with the apprenticeship serving as a pathway to full employment.

What are the most commonly searched types of Plant Operator jobs in California?

The most popular types of Plant Operator jobs in California are:

What cities in California are hiring for Plant Operator Apprentice jobs?

Cities in California with the most Plant Operator Apprentice job openings:

Infographic showing various Plant Operator Apprentice job openings in California as of August 2026, with employment types broken down into 83% Full Time, and 17% Part Time. Highlights an 100% In-person job distribution.

Stationary Engineer, Water Treatment Plant (7341) - Citywide - (U00047)

City and County of San Francisco

San Francisco, CA • On-site

Full-time

This job post has expired 1 day ago. Applications are no longer accepted.


City And County Of San Francisco rating

9.0

Company rating: 9.0 out of 10

Based on 25 frontline employees who took The Breakroom Quiz

98th of 855 rated public administrative organizations


Job description

Stationary Engineer, Water Treatment Plant

The Water Treatment Plant Stationary Engineer operates, maintains, and repairs a wide variety of complex machinery and equipment in a water treatment plant, water distribution system, and/or related facility. The ideal candidate will possess knowledge of the operation and maintenance requirements for a wide variety of water treatment plant/distribution system facilities machinery and equipment, and the tools and equipment necessary for their proper operation, maintenance, and repair. The candidate will have the ability to comprehend orders and communicate clearly in person, by telephone and by radio, will be able to read and comprehend procedures, policies, plan drawings, gauges, meters, populate and maintain records and logs, and develop write-ups for log entries, memos, and related job reports.

Essential duties and responsibilities include but are not limited to:

  • Operates and maintains a wide variety of chemical feed equipment, pumping, heating, ventilating, air conditioning, refrigeration, process machinery and radiators. May be required to operate Computerized Building Management Systems or Supervisory Control Data Acquisition (SCADA) systems.
  • Repairs automatic and manually controlled distribution and water treatment equipment including pumps, motors, boilers, compressors, alarm systems, residual chemical analyzers, chemical feeders and filters; may also be responsible for operating a water treatment and distribution facility in a safe and efficient manner without direct supervision.
  • Inspects and tests machinery and equipment including fire prevention equipment for safe, efficient and proper operation by visual and audio inspection during walk-throughs.
  • Makes entries and keeps records on shift operations. Collects, compiles and prepares water quality and operational reports by taking and entering meter and gauge readings, water and laboratory analysis readings and temperatures accurately in writing on operating log sheets.
  • Receives, records and stores large amounts of treatment chemicals and may handle hazardous chemicals such as ozone, fluoride, caustic soda and chlorine in confined or enclosed areas, and must be capable of safely and properly handling chemical spills; may include handling and treatment of hazardous waste.
  • Performs control tests and conducts water quality analysis during all phases of treatment. Includes pH, alkalinity, turbidity, saturation index, flocculation factors, conductivity, chlorine demand, caustic soda, chlorine, fluoride, ozone residuals, taste, odor and color. Calculates and maintains required disinfecting requirements.
  • Communicates verbally with craft, support and supervisory personnel.
  • Responsible for keys, 2-way radios and monitoring plant and buildings and grounds, including public safety.

Qualifications

Minimum qualifications (MQ) reflect the lowest level of acceptable education and/or experience required of an individual such that the individual reasonably could be expected to satisfactorily perform the duties of the position. Candidates must meet all the requirements established by the MQs to be considered for the position.

Education: Completion of a State or Federally recognized four-year Stationary Engineer apprenticeship program AND License and Certification:

  • Possession of a current valid Grade II Water Treatment Operator Certificate issued by the State of California.
  • Possession of a current valid California Driver License.

Substitution:

  • Four (4) years journey-level Operator and/or Stationary Engineer experience in the maintenance, repair and operation of a variety of mechanical and electrical pumping and related plant machinery of a water or wastewater treatment plant.
  • Four (4) years journey-level experience as a Marine Engineer performing duties in the areas of maintenance, repair and operation of a variety of mechanical and electrical pumping and related machinery.
  • Graduation from a recognized four-year Maritime Academy with a degree in Engineering or Technology.

Note: One year of full-time employment is equivalent to 2000 hours. (2000 hours of qualifying work experience is based on a 40-hour work week.)


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