Operations & Maintenance Technician IV - Mechanical (Water Treatment)

Operations & Maintenance Technician IV

• Mechanical (Water Treatment) The Metropolitan Water District of Southern California USD $46.52/Hr.
• USD $61.30/Hr. tuition reimbursement, 401(k) United States, California, Riverside Apr 14, 2026 Operations & Maintenance Technician IV
• Mechanical (Water Treatment) Job Locations US-CA-Yorba Linda | US-CA-Granada Hills | US-CA-Winchester | US-CA-Riverside | US-CA-La Verne Job

ID 2026-3278

Org Data :

Descr Linked Robert Diemer Filtration Plant Posted Date 4 hours ago(4/14/2026 9:52 AM) Application Filing Period April 14, 2026

• May 20, 2026 @ 4:30 p.

m. PST # of Openings 3 Min USD $46.52/Hr. Max USD $61.30/Hr. Group

TREATMENT&WATER QUALITY GROUP

Section

WATER TREATMENT SECTION

Unit

DIEMER UNIT

Team

MECHANICAL O&M TEAM, DIEMER

Bargaining Unit Name / Code 02

• AFSCME The Metropolitan Water District's Water System Operations Group has three openings for Operations & Maintenance Technician IV
• Mechanical located at the Diemer Treatment Facility (Yorba Linda, CA) in the Water Treatment Section.

This recruitment will be used to build an Eligibility List for the Water Treatment Section at the following locations: Diemer (Yorba Linda, CA), Jensen (Granada Hills, CA), Lake Skinner (Winchester, CA), Mills (Riverside, CA), and Weymouth (La Verne, CA). This list will be valid for 6 months from the date a candidate accepts the position. As an Operations & Maintenance Technician you will install, maintain, and repair a wide range of water utility and facility mechanical systems. In this journey-level position, you will monitor and inspect mechanical equipment to ensure reliability, perform predictive and diagnostic testing, and conduct preventive and corrective maintenance. You will support operations in conveyance and distribution, treatment plants, and pumping plants by improving equipment performance and upgrading systems to meet service demands. Key responsibilities in treatment include inspecting, maintaining, and improving the reliability of treatment equipment such as chemical feed systems, ozone generators, flash mixers, flocculators, filter beds, geared drive equipment, sedimentation basins, tanks, valves, pumps, compressors, piping systems, slide gates, chemical transporting and transfer systems, reclamation systems, and sludge removal systems. Operational activities include tasks associated with effective water flow and treatment such as operating valves and performing minor adjustment sand calibrating chemical feed and similar systems. You will also perform maintenance welding, fabrication, and machining; operate heavy equipment such as dump trucks, loaders, backhoes, overhead hoists and mobile cranes; perform safe rigging procedures; and adhere to proper use of Personal Protective Equipment and respiratory protection. Additionally, you will use computer programs for individual time entry, maintenance work order tracking, work planning and estimating, and general professional communications.

Schedule:

4/10, Monday

• Thursday, 6:00 AM
• 4:30 PM PST This job announcement has been designed to indicate the general nature and level of work being performed by employees in this classification/job. To further view the job duties of this position, please refer to the "Treatment Plants" section under "Job Duties" in the job description. To view the full job description click here: Operations & Maintenance Technician IV
• Mechanical

EMPLOYMENT STANDARDS MINIMUM QUALIFICATIONS

Education and Experience:

High school diploma or certificate of high school equivalency in addition to a minimum of 6 years in a mechanical maintenance position in a pump plant, treatment plant, hydroelectric or conveyance and distribution facility or similar environment. OR High school diploma or certificate of high school equivalency in addition to the attainment of journey level skills through a recognized mechanical trade training program. Journey level experience as demonstrated by practical application of general and advanced techniques and practices specific to the operation, maintenance, and repair of mechanical systems in treatment or pump plants, conveyance and distribution, and/or power generation systems, and related apparatus.

License:

Valid California Class C Driver's License or equivalent (required at time of application) that allows you to drive during your employment. CERTIFICATES, LICENSES and

REGISTRATIONS REQUIREMENTS

Employees in this position may be required to obtain and maintain the following certifications, licensing and registrations:

• Valid Driver's license from state of residency equivalent to a California Class A and/or B with appropriate commercial license endorsements.
• Crane Certifications
• Welding Certification
• Chemical Responder Certification
• Forklift Certification
• Manlift Certification
• MWD High Voltage Switching Certification
• Water Distribution Certification CLOSING

Benefits:

• Competitive compensation
• Excellent medical, dental, life, vision plans.
• Deferred compensation in the form of a 401(k) plan (with matching contribution) and a 457 plan.
• Retirement benefits under the California Public Employees' Retirement System
• Tuition reimbursement
• Training and advancement opportunities
• Excellent working environment For more information on MWD benefits, please use the following link: Benefits Regular FT PT Employees (Represented)

ABOUT MWD

The Metropolitan Water District of Southern California is a state-established cooperative that, along with its 26 cities and retail suppliers, provides water for 19 million people in six counties. The district imports water from the Colorado River and Northern California to supplement local supplies, and helps its members to develop increased water conservation, recycling, storage and other resource-management programs. The Metropolitan Water District of Southern California is committed to providing reasonable accommodations to qualified individuals with disabilities. Qualified individuals with disabilities, who need a reasonable accommodation during the application or selection process, please call (213) 217-7738 or email: jobs@mwdh2o.com. Metropolitan is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran, or any other protected characteristic(s).

Application Filing Period:

Closes at 4:30 pm PST on the date stated in the job announcement. However it may close prior to the filing end date if sufficient applications have been received. If sufficient applications have not been received, then the filing period end date may be extended.

Qualifying Experience:

Your resume must at a minimum include the month and year you began and ended employment, name of the organization, your title, and a brief description of your experience. If your employment was part-time, make sure you identify it on your resume next to the month/year.

Sponsorship:

Applicants for employment with The Metropolitan Water District of Southern California must have work authorization that does not now or in the future require sponsorship of a visa for employment authorization in the United States (i.e., H1-B or other employment-based immigration case).