Salary : $105,352.00 - $143,416.00 Annually
Location : Union City, CA
Job Type: Full Time
Job Number: 260005
Work Group: FMC
Team: FMC
Opening Date: 09/24/2025
Closing Date: 10/26/2025 4:00 PM Pacific

Overview
Wastewater Plant Mechanic I/II (Limited-Duration, Fully Benefited)

Elevate Your Career with Competitive Pay and Excellent Benefits!

Wastewater Plant Mechanic I - $50.65- $61.56 Hourly

$105,352.00 - $128,044.80 Annually

Wastewater Plant Mechanic II - $56.73 - $68.95 Hourly

$117,998.40 - $143,416.00 Annually

Plus Excellent Benefits

Protect public health. Keep essential equipment mission-ready.

About the District
Union Sanitary District is a special district serving Fremont, Newark, and Union City since 1918. We operate award-winning wastewater facilities and value safety, teamwork, and work-life balance.

Why this role

• Impact that matters: Your work keeps critical treatment systems running safely.
• Stability + growth: Fully benefited limited-duration project-funded role. You'll gain deep experience and work with other professional mechanics
• Modern shop & tools: Join our Fabrication, Maintenance & Construction (FMC) team at our state-of-the-art facility.

Examples of Duties
What you'll do

• Inspect, troubleshoot, maintain, and repair plant, shop, field, and construction equipment.
• Perform preventive maintenance, overhauls, and equipment installations.
• Contribute to a strong safety culture and responsive on-call rotation (when qualified).

Level placement

• Wastewater Plant Mechanic I: Semi-skilled, sub-journey work with training and progression.
• Wastewater Plant Mechanic II: Journey-level diagnostics, repair, and PM on complex systems.
• (Level depends on your qualifications.)

Qualifications
You bring

• Wastewater Plant Mechanic I: Education/skills to follow written/oral instructions, keep records, perform shop math + 2 years semi-skilled mechanical maintenance/repair experience.
• Wastewater Plant Mechanic II: High school (or equivalent) + recognized journey-level Maintenance/Plant Mechanic status.
• Both levels: Valid CA Class C license/insurability; teamwork mindset; ability to work outdoors/overtime; basic CMMS & MS Office skills. Willing to join on-call rotation once proficient. Must obtain a Class B California Driver's license within one year.

Benefits

• CalPERS retirement; medical, dental, vision (employee + family)
• Generous vacation & holidays; short-/long-term disability; life insurance
• Deferred Compensation with matching

Additional Information
IMPORTANT! Application Process:

• Apply online at by 4:00 p.m., Sunday, 10/26/2025.
• Qualified candidates will be invited to take an online Written Exam on Tuesday - Wednesday, 10/28-29/2025.
• Best qualified applicants will then be invited to the Performance Test to be held onsite at the District on Thursday, 11/13/2025.
• Candidates whose scores on the Performance Test qualify them for further consideration will be invited to a Virtual Qualifications Appraisal Interview on Thursday, 11/20/2025.
• Finalist interviews will be held on Wednesday, 12/3/2025 onsite.
• All candidates must pass a background check, Live Scan fingerprinting which includes DOJ and FBI searches, DMV clearance, and pre-employment physical.

Note on Limited-Duration

• This is a fully benefited, project-funded role.
• Employees in limited-duration roles are eligible to apply and compete for regular District vacancies in accordance with District rules; no appointment or extension is guaranteed.

Be a Part of Our Community:

As a Disaster Service Worker, USD employees play a vital role in promoting public health and safety during emergencies. We are an equal opportunity employer, encouraging workforce diversity.

Accommodations:

Candidates requiring assistance in the application process due to a disability should contact Human Resources at (kathleenk@unionsanitary.ca.gov).
Click for link to Classified Employees' Benefits Summary
01

Please indicate the level(s) you are qualified and applying for:

• Mechanic I
• Mechanic II
• Both

02

Describe your education, including courses taken and any apprenticeships that qualify you for the level of Mechanic that you are applying for.
03

Briefly describe your work experience performing mechanical maintenance and repair of shop, field and plant equipment, including the number of years in each area.
Required Question