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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Showing 5 of 22+ Water Treatment Technician jobs







Water HeaterWater Treatment Installer
$55,000 to $85,000 per Year
Are We the Right Fit for You?
Are you looking to join a company that is the leader in home services? Are you looking for rewarding work with great pay, benefits and advancement opportunities? Sierra Pacific has been an industry leader in the residential retrofit business in the Greater Sacramento Region since 1984, with services spanning from HVAC, Solar Pool, Solar ElectricGenerators, to Water Treatment and Windows.
Job Description
Sierra Pacific HomeComfort is looking for experienced plumbers to install water treatment systems and water heaters in residential homes throughout the Greater Sacramento market. Your responsibility is to assemble and install water heaters, filtration and treatment systems. You assist and educate the clients on how to use their new equipment. You do your best work with your craftmanship and with your customer service skills to make sure that you leave the clients feeling delights of the service you provided. You will be provided a company vehicle, tools and a second helper if needed.
Responsibilities
- Test water quality
- Cutting and installing pipes, gas line, valves, adapters and fittings with company provided tools
- Examine plumbing system to determine fittings and material needed
- Troubleshoot and repair pipe and pipeline systems
- Prepare written work cost estimates for clients
- Adhere to Company safety policies and procedures
- Hand TrenchingDigging
Qualifications
- 3 Years' experience in all aspects of filtration and water treatment
- Previous experience in plumbing, maintenance
- Knowledge of Uniform Plumbing Code
- Strong troubleshooting and critical thinking skills
- Excellent written and verbal communication skills
- Strong customer service skills
- Desire to exceed customer's expectations
- Clean DMV record and Driver's license required
- Ability to handle physical workload, including lifting up to 50 lbs
Benefits
- Medical, DentalVision Insurance
- Paid VacationsPaid Holidays
- 401K with Employer Match
- Year-round work
- Paid training
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Find JobsWater Treatment Technician Jobs by City in California
Where California roles are concentrated, by current openings.
Water Treatment Technician Job Market in California
A snapshot from current California openings, updated as new roles post.
Who's Hiring



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.
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