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 24+ Water Treatment Technician jobs
Job Summary
North Valley Water Solutions is a fully licensed California plumbing contractor (C-36, CSLB #1152673). We install and service water softeners and reverse osmosis systems for homeowners across Northern California. We’re hiring an experienced plumber who can handle the full job: install and service water treatment systems, and take care of whatever other plumbing the homeowner needs while we’re there.
Our customers often ask “while you’re here, can you look at…”: a leaking hose bib, a water heater, a running toilet, a bad shutoff valve. We want a tech who can diagnose the problem, quote it on the spot and fix it. When you sell and complete add-on plumbing work, you split the profit with us. Good techs here earn well above their hourly rate.
What You’ll Do
- Install whole-home water softeners, carbon filtration systems and under-sink/tankless RO systems
- Service water treatment equipment: filter changes, resin and carbon rebeds, valve repairs, troubleshooting and programming
- Diagnose and repair household plumbing: leaks, valves, fixtures, faucets, toilets, hose bibs, PRVs, water heaters and repipes
- Spot problems on the job, explain the options to homeowners in plain language, and quote add-on work (no pressure, just honest recommendations)
- Work in copper, PEX, CPVC, PVC and galvanized
- Leave every job clean, take photos of your work, and walk the customer through their new system
- Keep your vehicle and inventory organized and stocked
What You Need
- 3+ years of residential plumbing experience (service and repair, not just new construction)
- Confident soldering copper, crimping/expanding PEX, and working with existing household plumbing
- Able to diagnose plumbing problems and explain them clearly to homeowners
- Your own hand tools
- Valid CA driver’s license and a clean driving record
- Able to lift 150+ lbs and work in garages, crawlspaces, attics and outdoors
- Shows up on time, communicates well, and treats customers’ homes with respect
Nice to Have
- Water softener/RO install or service experience (we’ll train the right plumber)
- Water heater install experience (tank and tankless)
- Service or sales experience at a plumbing company
- Bilingual in English and Spanish
Why Work With Us
- Steady work with a growing, licensed company
- Hourly pay plus a profit split on add-on work you sell
- Overtime and paid drive time between jobs
- Small team, so your work gets noticed and there’s room to grow into lead tech
- Good techs here earn well above their hourly rate
- Company vehicle included
How to Apply
Apply on Indeed with a short note about your plumbing experience, especially service and repair work.
Pay: $28.11 - $33.85 per hour
Expected hours: 40.0 per week
Work Location: On the road
Job Summary
North Valley Water Solutions is a fully licensed California plumbing contractor (C-36, CSLB #1152673). We install and service water softeners and reverse osmosis systems for homeowners across Northern California. We’re hiring an experienced plumber who can handle the full job: install and service water treatment systems, and take care of whatever other plumbing the homeowner needs while we’re there.
Our customers often ask “while you’re here, can you look at…”: a leaking hose bib, a water heater, a running toilet, a bad shutoff valve. We want a tech who can diagnose the problem, quote it on the spot and fix it. When you sell and complete add-on plumbing work, you split the profit with us. Good techs here earn well above their hourly rate.
What You’ll Do
- Install whole-home water softeners, carbon filtration systems and under-sink/tankless RO systems
- Service water treatment equipment: filter changes, resin and carbon rebeds, valve repairs, troubleshooting and programming
- Diagnose and repair household plumbing: leaks, valves, fixtures, faucets, toilets, hose bibs, PRVs, water heaters and repipes
- Spot problems on the job, explain the options to homeowners in plain language, and quote add-on work (no pressure, just honest recommendations)
- Work in copper, PEX, CPVC, PVC and galvanized
- Leave every job clean, take photos of your work, and walk the customer through their new system
- Keep your vehicle and inventory organized and stocked
What You Need
- 3+ years of residential plumbing experience (service and repair, not just new construction)
- Confident soldering copper, crimping/expanding PEX, and working with existing household plumbing
- Able to diagnose plumbing problems and explain them clearly to homeowners
- Your own hand tools
- Valid CA driver’s license and a clean driving record
- Able to lift 150+ lbs and work in garages, crawlspaces, attics and outdoors
- Shows up on time, communicates well, and treats customers’ homes with respect
Nice to Have
- Water softener/RO install or service experience (we’ll train the right plumber)
- Water heater install experience (tank and tankless)
- Service or sales experience at a plumbing company
- Bilingual in English and Spanish
Why Work With Us
- Steady work with a growing, licensed company
- Hourly pay plus a profit split on add-on work you sell
- Overtime and paid drive time between jobs
- Small team, so your work gets noticed and there’s room to grow into lead tech
- Good techs here earn well above their hourly rate
- Company vehicle included
How to Apply
Apply on Indeed with a short note about your plumbing experience, especially service and repair work.
Pay: $28.11 - $33.85 per hour
Expected hours: 40.0 per week
Work Location: On the road
See All 24 Water Treatment Technician Jobs in California
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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 AECOM, HDR, and Ecowater Systems and others right now, based on current listings on Migrate Mate as of November 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?
San Jose, Sacramento, and Millbrae 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 20% of water treatment technician openings tied to California are remote or hybrid as of November 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 24 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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