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.

Find Jobs

Overview

Open roles22
Top employerGFT
Top citySacramento, CA
Cities hiring14
Work type63% Hybrid
Top credentialHigh school diploma or GED

Showing 5 of 22+ Water Treatment Technician jobs

Sierra Pacific Home & Comfort
Water Heater & Water Treatment Installer
We won't show you this job again
Sierra Pacific Home & Comfort
Added 2d ago
Water Heater & Water Treatment Installer
Sierra Pacific Home & Comfort
Rancho Cordova, California
Construction
Construction Management
Skilled Trades
$55k - $85k/yr
51-200

Have you applied for this role?

Water Quality Specialists
Wastewater & Water Treatment Operator
We won't show you this job again
Water Quality Specialists
Added 3d ago
Wastewater & Water Treatment Operator
Water Quality Specialists
San Diego County, CA
Engineering (Non-Software)
Maintenance & Repair
Manufacturing Operations
Skilled Trades
Wastewater Certification

Have you applied for this role?

City and County of San Francisco
Truck Driver - Water Supply Treatment Division - SFPUC (7355)
We won't show you this job again
City and County of San Francisco
Added 5d ago
Truck Driver - Water Supply Treatment Division - SFPUC (7355)
City and County of San Francisco
Millbrae, California
Corporate Training
Corporate Training & Learning Development
Teaching & Instruction
$97k - $123k/yr
DOT Physical Certification
5,001-10,000

Have you applied for this role?

W
Account Manager - Industrial/Commercial Water Treatment
We won't show you this job again
W
Added 1w ago
Account Manager - Industrial/Commercial Water Treatment
Water Engineering Inc.
Sacramento, California
Account Management
Customer Success
Sales
$60k - $65k/yr

Have you applied for this role?

A
Pump and Well and/or Water Treatment Service Technician
We won't show you this job again
A
Added 1w ago
Pump and Well and/or Water Treatment Service Technician
Arolo Company Inc.
Petaluma, California
Maintenance & Repair
Skilled Trades
$25 - $55/hr
On-Site

Have you applied for this role?

See All 22 Water Treatment Technician Jobs in California

Find roles in California that match your experience and apply in just a few clicks.

Find Jobs

Water Treatment Technician Jobs by City in California

Where California roles are concentrated, by current openings.

Sacramento
4 jobs
Irvine
2 jobs
San Jose
2 jobs
Los Angeles
2 jobs
Sunol
1 job
Clovis
1 job
Loomis
1 job
Modesto
1 job
Millbrae
1 job

Water Treatment Technician Job Market in California

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

Who's Hiring

GFT
GFT2 open roles
GHD
GHD2 open roles
HDR
HDR2 open roles

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, GHD, and HDR and others right now, based on current listings on Migrate Mate as of September 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?

Sacramento, Irvine, and San Jose 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 75% of water treatment technician openings tied to California are remote or hybrid as of September 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.

See All 22 Water Treatment Technician Jobs in California

Find roles in California that match your experience and apply in just a few clicks.

Find Jobs