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Water Treatment Operator Trainee Jobs in Riverside, CA

In-N-Out Burgers

Wastewater Treatment Operator I

Chino, CA · On-site

$31.45 - $36/hr

Take water samples daily and analyze for Turbidity and pH (adjust chemical dosing as required ... Wastewater Treatment Plant Operators Certificate Grade II or higher (preferred) Physical Demands ...

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 ...

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Industrial Wastewater Treatment Operator I

Santa Ana, CA · On-site

$22 - $29/hr

Industrial Wastewater Treatment Operator I A well-established manufacturing organization in Santa ... Working knowledge of wastewater treatment, water reclamation, pumps, chemical processes, and ...

Ardurra

Water Treatment Design Lead

Irvine, CA

$140K - $200K/yr

Ardurra is seeking a Water Treatment Lead to join our team ideally in Irvine, CA., but could be ... Our collaborative work environment and inclusive operating philosophy allow us to maintain a ...

Essel

Water Supply Operator I

Pomona, CA · On-site

The Water Supply Operator I is an entry-level position requiring immediate to general supervision ... Operates and monitors a variety of water supply and treatment equipment such as: * Pumping systems

Essel

Water Supply Operator I

Pomona, CA · On-site

The Water Supply Operator I is an entry-level position requiring immediate to general supervision ... Operates and monitors a variety of water supply and treatment equipment such as: * Pumping systems

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All JobsWater Treatment Operator JobsWater Treatment Operator Trainee JobsWater Treatment Operator Trainee Jobs in Riverside, CA

Water Treatment Operator Trainee information

See Riverside, CA salary details

$14

$28

$51

How much do water treatment operator trainee jobs pay per hour?

As of Sep 6, 2026, the average hourly pay for water treatment operator trainee in Riverside, CA is $28.59, according to ZipRecruiter salary data. Most workers in this role earn between $20.34 and $34.38 per hour, depending on experience, location, and employer.

What is a water treatment operator trainee?

Water Treatment Operator Trainees are entry-level professionals who assist in the operation and maintenance of water treatment facilities. They work under the supervision of experienced operators to learn how to monitor water quality, operate equipment, and ensure that water meets safety and regulatory standards. Their duties often include conducting tests, recording data, and performing basic maintenance tasks. Over time, trainees gain the skills and certifications needed to become fully qualified water treatment operators.

What are the key skills and qualifications needed to thrive as a water treatment operator trainee?

To thrive as a Water Treatment Operator Trainee, you need a basic understanding of water treatment processes, mechanical aptitude, and typically at least a high school diploma or GED. Familiarity with laboratory testing equipment, SCADA systems, and safety protocols is common, and obtaining state operator-in-training certification may be required. Strong attention to detail, teamwork, and problem-solving skills help trainees excel in monitoring and maintaining treatment systems. These abilities are crucial for ensuring safe, compliant, and efficient water treatment operations that protect public health.

What are some common challenges faced by water treatment operator trainees during the initial training period?

As a Water Treatment Operator Trainee, one of the main challenges is quickly learning to operate complex equipment and monitoring systems while adhering to strict safety and regulatory standards. Trainees often need to develop a strong attention to detail and the ability to respond calmly to unexpected issues, such as equipment malfunctions or changes in water quality. Additionally, adjusting to shift work and collaborating effectively with experienced operators and maintenance staff can require good communication skills and adaptability. Support and mentorship from senior team members are common, helping trainees build confidence and technical expertise over time.

What is the difference between Water Treatment Operator Trainee vs Water Treatment Operator?

AspectWater Treatment Operator TraineeWater Treatment Operator
CertificationsOften requires a high school diploma; some certifications may be preferred or required during trainingRequires relevant certifications such as state licensing or operator certification
Work EnvironmentTraining environment, supervised, learning on the jobFull-time, operational environment, responsible for daily water treatment tasks
Job ResponsibilitiesLearning procedures, assisting with operations, gaining experienceMonitoring equipment, adjusting processes, ensuring water quality

In summary, a Water Treatment Operator Trainee is in the learning phase, gaining necessary skills and certifications, while a Water Treatment Operator is fully responsible for managing water treatment processes independently.

What are the most commonly searched types of Water Treatment Operator jobs in Riverside, CA?

The most popular types of Water Treatment Operator jobs in Riverside, CA are:

What are popular job titles related to Water Treatment Operator Trainee jobs in Riverside, CA?

For Water Treatment Operator Trainee jobs in Riverside, CA, the most frequently searched job titles are:

What job categories do people searching Water Treatment Operator Trainee jobs in Riverside, CA look for?

The top searched job categories for Water Treatment Operator Trainee jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Water Treatment Operator Trainee jobs?

Cities near Riverside, CA with the most Water Treatment Operator Trainee job openings:

Water Treatment Operator Trainee jobs near you
Infographic showing various Water Treatment Operator Trainee job openings in Riverside, CA as of August 2026, with employment types broken down into 3% As Needed, 73% Full Time, 21% Part Time, and 3% Contract. Highlights an 95% Physical, 1% Hybrid, and 4% Remote job distribution, with an average salary of $59,474 per year, or $28.6 per hour.

Wastewater Treatment Operator I

In-N-Out Burger

Chino, CA • On-site

$31.45 - $36/hr

Full-time

Medical, Dental, Vision, Life, Retirement

Posted 3 days ago

New

In-N-Out Burger rating

8.7

Company rating: 8.7 out of 10

Based on 542 frontline employees who took The Breakroom Quiz

1st of 107 rated fast food restaurants

Job description

Name:
Wastewater Treatment Operator I
Location: 16000 Quality Way, Chino, CA
Work Type:
Full-time
Department:
Chino Meat Production
Description & Requirements
Come join our family at In-N-Out Burger!
We have an excellent opportunity for a full-time Wastewater Treatment Operator I working in our Chino, CA Facility.
The Wastewater Treatment Operator reports directly to the Maintenance Supervisor in the Meat Department and is responsible for the effective operation and maintenance of the onsite wastewater treatment plant to ensure compliance with local and state regulations. This role involves daily sampling, necessary chemical adjustments, basic mechanical inspections, level monitoring, and sending samples for laboratory analysis.
Qualified candidates will possess critical thinking skills and a solid understanding of chemistry as it pertains to pH, BOD, and TSS, enabling them to make necessary adjustments to guarantee that the effluent from our wastewater stream meets acceptable standards.
General Responsibilities:
  • Perform daily rounds of WWTP documenting issues as they arise, evaluating and analyzing current system and SOP's for inefficiencies.
  • Take water samples daily and analyze for Turbidity and pH (adjust chemical dosing as required).
  • Perform preventative maintenance on all aspects of the WWTP system as needed to ensure proper care and operation.
  • Communicate any alarms/issues to supervisor as to prevent any untreated discharge to the water company.
  • Will help to train new hires and be involved with cross-training.
  • Operates the Screw press to maintain empty sludge tank and empty hoppers.

Work Schedule + Benefits:
  • Full-time position, Hourly (non-exempt)
  • Hourly Pay Range: $31.45- $36.00/ HR DOE
The above represents the expected salary for this job requisition. Ultimately, in determining your pay, we'll consider your experience and other job related factors.
  • Schedule- Tuesday- Saturday
  • Hours: 2:00 pm-10:30 pm, Monday- Friday
  • Some overtime as needed
  • Excellent Benefits, to include Medical, Dental, Vision, Life Insurance, FSA's, 401(k)/Profit Sharing Plan, Adoption Assistance, Education Reimbursement, Supplemental Health Plans and Pet Insurance

Qualifications:
  • Minimum 3 -5 years working as a waste water treatment operator (required)
  • Experience with local permitting and compliance as it relates to waste water treatment.
  • High School Graduate or equivalent
  • Wastewater Treatment Plant Operators Certificate Grade II or higher (preferred)

Physical Demands/Requirements:
  • Ability to lift 100 lbs.
  • Ability to work in high, precarious places
  • Ability to work near moving mechanical machinery
  • Ability to work in wet, humid conditions

ABOUT In-N-Out Burger
In-N-Out Burger was founded in 1948 by Harry and Esther Snyder in Baldwin Park, California, and remains privately owned and operated. Under the direction of the Snyder family, the company has opened restaurants throughout California, Nevada, Arizona, Utah, Texas, Oregon, Colorado, Washington, Idaho, and Tennessee. In-N-Out Burger's menu has remained the same since 1948, and we have maintained a simple philosophy - serve only the highest quality product, prepare it in a clean and sparkling environment, and serve it in a warm and friendly manner. We have built a reputation for fresh, made-to-order foods prepared and served by friendly, well trained Associates.
In-N-Out Burger offers a competitive salary and comprehensive benefit package. We are an Equal Opportunity Employer by choice. Should there be a need, In-N-Out Burger will provide a reasonable accommodation to complete the interview process upon request.

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