Water Treatment Technician Jobs in California

Water Treatment Technician jobs in California are concentrated in municipal water utilities, regional sanitation districts, and large-scale agricultural irrigation systems, with demand at every level from entry-grade operators to senior plant supervisors. The most active hiring markets are Los Angeles, Sacramento, and the San Francisco Bay Area, where agencies such as the Los Angeles Department of Water and Power, East Bay Municipal Utility District, and the Metropolitan Water District of Southern California maintain large ongoing workforces. The most in-demand specialties in California right now are distribution system operation, membrane filtration, and water quality monitoring. See the openings below and apply to the ones that match your experience.

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Overview

Open roles20
Top employerGFT
Top cityLos Angeles, CA
Cities hiring15
Work type42% Remote
Top industryConsulting

Showing 5 of 20+ Water Treatment Technician jobs

California Water Service
Water Treatment Operator Trainee
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California Water Service
Added 1d ago
Water Treatment Operator Trainee
California Water Service
Coalinga, California
Corporate Training
Educational Administration
Learning & Development
On-Site
High school diploma or GED

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City and County of San Francisco
Construction Inspector - Water Supply Treatment Division - SFPUC (6318)
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City and County of San Francisco
Added 2d ago
Construction Inspector - Water Supply Treatment Division - SFPUC (6318)
City and County of San Francisco
Millbrae, California
Construction Management
Engineering (Non-Software)
Project Management
$126k - $153k/yr
Bachelor of Science
5,001-10,000

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GrowthWise Search Partners
Waste Water Treatment Business Development Manager
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GrowthWise Search Partners
Added 1w ago
Waste Water Treatment Business Development Manager
GrowthWise Search Partners
Sacramento, California
Business Operations
Program Management
Project Management
$120k - $180k/yr
Hybrid

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Solenis
Associate Manager, Sales - Industrial Water Treatment (Municipal)
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Solenis
Added 1w ago
Associate Manager, Sales - Industrial Water Treatment (Municipal)
Solenis
California
Business Development
Corporate Development & M&A
Investment Operations
Procurement & Purchasing
$89k - $130k/yr
Remote (US)
Bachelor's degree in business
1,001-5,000

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Veolia
Copy of Sr. Process Engineer - Water Treatment
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Veolia
Added 1w ago
Copy of Sr. Process Engineer - Water Treatment
Veolia
Richmond, California
Account Management
Customer Service
Customer Service & Support
Sales
$115k - $135k/yr
Remote (US)
Bachelor's degree in mechanical engineering
10,000+

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Water Treatment Technician Jobs by City in California

Where California roles are concentrated, by current openings.

Los Angeles
3 jobs
San Jose
2 jobs
San Diego
2 jobs
Brea
1 job
Irvine
1 job
Modesto
1 job
Coalinga
1 job
Millbrae
1 job
Richmond
1 job

Water Treatment Technician Job Market in California

A snapshot from current California openings, updated as new roles post.

Who's Hiring

GFT
GFT4 open roles
Veolia
Veolia2 open roles
Arcadis
Arcadis2 open roles

Top Industries Hiring

  • Consulting & Professional Services

What California Employers Look For

The qualifications that appear most often in water treatment technician jobs across California.

  • Active California Water Treatment Operator certification issued by the State Water Resources Control Board
  • Experience operating and maintaining water treatment or filtration plant equipment
  • Familiarity with California Title 22 drinking water regulations and compliance reporting
  • Ability to collect, test, and record water quality samples accurately
  • Valid California driver license for travel between facilities and field sites
  • Physical ability to work outdoors and in confined spaces under varying conditions

Water Treatment Technician Jobs in California: Frequently Asked Questions

How do you become a water treatment technician in California?

You become a water treatment technician in California by earning a Water Treatment Operator certificate from the State Water Resources Control Board, which administers the certification program and its exams. Entry-level candidates typically need a high school diploma or GED, then pass the Grade T1 exam to work under supervision while gaining plant hours. Community colleges throughout California, including those in the Los Angeles and Sacramento areas, offer water technology programs that prepare candidates for the exam.

Which companies hire water treatment technicians in California?

California water treatment technician roles are posted by GFT, Veolia, and Arcadis and others right now, based on current listings on Migrate Mate as of August 2026. California's size means hiring comes from a mix of large municipal utilities, regional water districts, and private operations and maintenance contractors that serve public agencies.

Which California cities have the most water treatment technician jobs?

Los Angeles, San Jose, and San Diego have the most water treatment technician openings in California. The concentration in larger metros reflects the scale of their municipal water systems and the regional agencies that serve surrounding communities, while smaller cities on the list often sit near major infrastructure projects or serve as hubs for agricultural water management in California's Central Valley.

Are there remote water treatment technician jobs in California?

Yes, but they're rare. About 83% of water treatment technician openings tied to California are remote or hybrid as of August 2026, because most of the work requires hands-on operation, equipment maintenance, and on-site water sampling. The portions of the role most likely to allow remote work are data reporting, compliance documentation, and SCADA monitoring for technicians at larger facilities with advanced control systems.

How can I get hired as a water treatment technician in California with little or no experience?

The most realistic entry path is applying for a utility worker or plant operator aide position at a California municipal water agency, which typically does not require prior certification and provides on-the-job hours that count toward your Grade T1 exam eligibility. Large agencies such as the Los Angeles Department of Water and Power and Sacramento's water utility run structured entry programs for new hires. Completing a water technology certificate program at a California community college strengthens your application significantly before you apply.

Where can I find and apply to water treatment technician jobs in California?

You can find and apply to water treatment technician jobs in California on Migrate Mate, which lists current California openings from utilities, districts, and private contractors across the state. Search the listings for roles that fit your certification grade and experience level, then apply directly to the ones that match.

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