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Water System Operator Jobs in Rialto, CA (NOW HIRING)

Onterris

Water Treatment System Operator

Corona, CA

$25/hr

We are looking for a full-time Water Treatment System Operator , who will work directly on treatment plants designed to treat contaminated groundwater and vapor. This role will be based at our client ...

Essel

Water Supply Operator I

Pomona, CA · On-site

The Water Supply Operator I is an entry-level position requiring immediate to general supervision ... Chemical feed systems * Water storage facilities * Measuring and control systems * Interagency ...

Essel

Water Supply Operator I

Pomona, CA · On-site

The Water Supply Operator I is an entry-level position requiring immediate to general supervision ... Chemical feed systems * Water storage facilities * Measuring and control systems * Interagency ...

Ventura Foods

Waste Water Operator

Ontario, CA · On-site

$28.09 - $34.95/hr

Operate the waste water system within permit limits set by the City, TCEQ, and EPA. Aid in complying with the Storm Water Pollution Prevention Plan. Maintain the back lot within food safety and ...

Essel

Water Supply Operator I

Pomona, CA

The Water Supply Operator I is an entry-level position requiring immediate to general supervision ... Chemical feed systems * Water storage facilities * Measuring and control systems * Interagency ...

Ventura Foods

Waste Water Operator

Ontario, CA

$28.09 - $34.95/hr

Operate the waste water system within permit limits set by the City, TCEQ, and EPA. Aid in complying with the Storm Water Pollution Prevention Plan. Maintain the back lot within food safety and ...

Ventura Foods

Waste Water Operator

Ontario, CA

$28.09 - $34.95/hr

Operate the waste water system within permit limits set by the City, TCEQ, and EPA. Aid in complying with the Storm Water Pollution Prevention Plan. Maintain the back lot within food safety and ...

Ventura Foods

Waste Water Operator

Ontario, CA · On-site

$28.09 - $34.95/hr

Operate the waste water system within permit limits set by the City, TCEQ, and EPA. Aid in complying with the Storm Water Pollution Prevention Plan. Maintain the back lot within food safety and ...

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All JobsWater System Operator JobsWater System Operator Jobs in Rialto, CA

Water System Operator information

See Rialto, CA salary details

$14

$31

$49

How much do water system operator jobs pay per hour?

As of Jul 26, 2026, the average hourly pay for water system operator in Rialto, CA is $31.02, according to ZipRecruiter salary data. Most workers in this role earn between $21.68 and $36.39 per hour, depending on experience, location, and employer.

Is being a water operator worth it?

A water system operator is responsible for maintaining and operating water treatment and distribution systems, often requiring technical skills and certifications. The job offers stable employment, competitive wages, and the opportunity to work outdoors or in a plant environment, making it a valuable career for those interested in public health and infrastructure. Career advancement and ongoing training are common aspects of the role.

What are some common challenges faced by Water System Operators in maintaining regulatory compliance?

Water System Operators often encounter challenges in keeping up with evolving regulations and ensuring that all testing, monitoring, and reporting requirements are met consistently. This may involve staying updated with local, state, and federal water quality standards, managing the documentation of water sampling, and responding quickly to any detected issues. Operators must also balance routine maintenance with emergency repairs, all while coordinating with team members and regulatory agencies. Proactive communication and ongoing training are key to successfully navigating these challenges.

How much do water operators make in the US?

Water system operators in the US typically earn a median annual salary of around $50,000 to $60,000, with experienced operators or those in supervisory roles earning higher. Salaries can vary based on location, level of certification, and the size of the water system they manage.

What are Water System Operators?

Water System Operators are professionals responsible for managing and maintaining the equipment, processes, and infrastructure that treat and distribute drinking water or process wastewater. They monitor water quality, operate pumps and valves, test samples, and ensure that water systems comply with government regulations. Their work is essential for public health and environmental protection, as they help provide safe, clean water to communities and manage wastewater disposal.

What do I need to become a water operator?

To become a water system operator, you typically need a high school diploma or equivalent, relevant technical training, and often a state-issued certification or license. Experience with water treatment processes, pumps, and safety protocols is also important, and some positions require ongoing education to maintain certification.

What are the key skills and qualifications needed to thrive as a Water System Operator, and why are they important?

To thrive as a Water System Operator, you need a solid understanding of water treatment processes, regulatory compliance, and basic mathematics, typically supported by a high school diploma and state certification. Familiarity with SCADA systems, water testing equipment, and compliance documentation is essential for daily operations. Strong problem-solving, attention to detail, and effective communication skills help operators respond to emergencies and collaborate with team members. These skills ensure safe, reliable water delivery, regulatory compliance, and protection of public health.

What is the difference between Water System Operator vs Water Treatment Plant Operator?

AspectWater System OperatorWater Treatment Plant Operator
CertificationsWater operator licenses, state-specific certificationsWater operator licenses, state-specific certifications
Work EnvironmentWater distribution systems, pipelines, reservoirsWater treatment facilities, filtration, chemical handling
Industry UsageMunicipal water supply, public utilitiesMunicipal water treatment, industrial facilities

Both roles require similar certifications and often work within municipal water systems. The main difference is that Water System Operators focus on maintaining and operating water distribution networks, while Water Treatment Plant Operators specialize in treating water at treatment facilities. Understanding these distinctions helps job seekers identify the right career path within the water industry.

Where do water treatment operators make the most money?

Water system operators tend to earn higher salaries in regions with a higher cost of living and greater demand for water infrastructure, such as urban areas or states with extensive water treatment needs. Factors like experience, certifications, and the size of the water system also influence earning potential.
What cities near Rialto, CA are hiring for Water System Operator jobs? Cities near Rialto, CA with the most Water System Operator job openings:
Water System Operator jobs near you
Infographic showing various Water System Operator job openings in Rialto, CA as of July 2026, with employment types broken down into 41% Full Time, 57% Part Time, 1% Contract, and 1% Nights. Highlights an 100% Physical job distribution, with an average salary of $64,529 per year, or $31 per hour.

Water Treatment System Operator

Onterris

Corona, CA

$25/hr

Full-time

Posted 25 days ago

Job description

About Us

At Onterris, we build careers grounded in purpose,responsibilityand real-world impact.

"For Planet and Progress" is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected,interwovenand international. Our scientists, engineers, field teams,consultantsand professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive.

When you join us,you'renot just forging acareer,you'rejoining a movement. A movement for better thinking, smartersolutionsand lasting impact.

Together, we will advance our way of life and protect the integrity of our environment every step of the way.

We are looking for a full-time Water Treatment System Operator, who will work directly on treatment plants designed to treat contaminated groundwater and vapor. This role will be based at our client site in Corona, CA. This is a full-time position with hours averaging 60 hours per week, with occasional additional hours as needed. The compensation for this role is $25/hour.

A Day in the Life

As a key member of theteam, this role will be responsible for a full range of activities including:

  • Coordinate operation, maintenance, and repair of water treatment equipment and associated well field and support equipment.
  • Perform and direct activities to ensure that codes, standards, and water treatment objectives are met whilebeing environmentally conscious.
  • Operate and control motors, pumps, and valves for vapor and water treatment systems.
  • Collect water samples and coordinate laboratory analysis.
  • Self-perform periodic maintenance activities and manage subcontractors for specialized equipment service.
  • Troubleshoot mechanical and electrical process equipment for initial diagnoses.
  • Be an integral part of our safety culture, approaching all aspects of work with a safety-first attitude.
  • Maintain effective communication with project team members.
  • Plan and schedule work to meet required timelines.
  • Manage and maintain daily operations logs, inventory, site consumables and vendor service contracts
  • Available for occasional off-hour remote monitoring and call-ins to troubleshoot treatment system performance in the event of equipment failure or unforeseen shutdowns (including weekends).
  • Available for a day/night shift rotation.

Your Expertise and Skills

To perform this job successfully, individuals must be able to perform each duty and responsibility satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the duties and responsibilities.

  • Working knowledge of low-pressure steam boilers, water treatment equipment, and control systems
  • Excellent problem-solving skills with critical thinking andmechanical/electricalsystems
  • Time management skills
  • An ability to work autonomously as well as in a team
  • Must possess a valid driver's license with a clean motor vehicle record
  • Must have a reliable form of transportation to travel to job sites

Preferred Qualifications

  • 1-3 years of previous experience in a similar role preferred, but not required
  • OSHA 40-Hour Hazwoper

Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients' resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com.

We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more.

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