Water and Wastewater Treatment Plant and System Operators
Career, Salary and Education Information
What They Do: Water and wastewater treatment plant and system operators manage a system of machines to transfer or treat water or wastewater.
Work Environment: Most water and wastewater treatment plant and system operators are employed by local government. Water and wastewater treatment plant and system operators typically work full time.
How to Become One: Water and wastewater treatment plant and system operators typically need at least a high school diploma or equivalent and a license to work. They also complete on-the-job training.
Salary: The median annual wage for water and wastewater treatment plant and system operators is $47,880.
Job Outlook: Employment of water and wastewater treatment plant and system operators is projected to decline 7 percent over the next ten years.
Related Careers: Compare the job duties, education, job growth, and pay of water and wastewater treatment plant and system operators with similar occupations.
Following is everything you need to know about a career as a water treatment plant operator with lots of details. As a first step, take a look at some of the following jobs, which are real jobs with real employers. You will be able to see the very real job career requirements for employers who are actively hiring. The link will open in a new tab so that you can come back to this page to continue reading about the career:
Top 3 Water Treatment Plant Jobs
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Plant Operator
- The Fairmont Hotel
- Scottsdale, AZ
Boiler, chiller water treatment and HVAC repair * Must have electrical, plumbing and basic maintenance skills. * Must be able to read, write and speak English fluently. * Be able to occasionally lift ...
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Enhanced Treatment & Site Upgrade Assistant Engineering Program Mgr
- Union Sanitary District
- Union City, CA
... Plant . This is a fully benefited, limited-duration role (7-8 years). What You'll Do: Manage ... water /wastewater. * Strong knowledge of wastewater treatment processes and environmental ...
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Mechanical Superintendent - Costa Mesa, CA.
- Power House
- Costa Mesa, CA
This person will be assigned to (2) projects in Irvine working at a municipal water treatment plant . One project is 60% complete and involves the construction of a fueling facility (diesel, gas, CNG
Top 3 Wastewater Treatment Plant Jobs
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Enhanced Treatment & Site Upgrade Assistant Engineering Program Mgr
- Union Sanitary District
- Union City, CA
We're hiring an Enhanced Treatment & Site Upgrade (ETSU) Assistant Program Manager to help lead the development of our Advanced Wastewater Treatment Plant . This is a fully benefited, limited-duration ...
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Mechanical Superintendent - Costa Mesa, CA.
- Power House
- Costa Mesa, CA
... wastewater treatment plants, and should have experience working for a self-performing General ... This person will be assigned to (2) projects in Irvine working at a municipal water treatment plant
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Senior Environmental Health and Safety Manager
- Danone North America
- City of Industry, CA
Ensure facility maintains ongoing compliance with OSHA/EPA requirements, safety standards, wastewater treatment plant operations, air permits and waste management practices. Serve as the interface ...
What Water and Wastewater Treatment Plant and System Operators Do[About this section] [To Top]
Water and wastewater treatment plant and system operators manage a system of machines, often through the use of control boards, to transfer or treat water or wastewater.
Duties of Water and Wastewater Treatment Plant and System Operators
Water and wastewater treatment plant and system operators typically do the following:
- Add chemicals, such as ammonia or chlorine, to disinfect water or other liquids
- Inspect equipment on a regular basis
- Monitor operating conditions, meters, and gauges
- Collect and test water and sewage samples
- Record meter and gauge readings and operational data
- Document and report test results to regulatory agencies
- Operate equipment to purify and clarify water or to process or dispose of sewage
- Clean and maintain equipment, tanks, filter beds, and other work areas
- Follow U.S. Environmental Protection Agency (EPA) regulations
- Ensure safety standards are met
It takes many steps to get water from natural sources—reservoirs, streams, and groundwater—into people's houses. Similarly, it is a complicated process to convert the wastewater from drains and sewers into a form that is safe to release into the environment.
The specific duties of plant operators depend on the type and size of the plant. In a small plant, one operator may be responsible for maintaining all of the systems. In large plants, multiple operators work the same shifts and are more specialized in their duties, often relying on computerized systems to help them monitor plant processes.
Water and wastewater treatment plant and system operators must be able to manually operate the equipment if there is a plant malfunction due to power outages or electrical issues.
Water treatment plant and system operators work in water treatment plants. Fresh water is pumped from wells, rivers, streams, or reservoirs to water treatment plants, where it is treated and distributed to customers. Water treatment plant and system operators run the equipment, control the processes, and monitor the plants that treat water to make it safe to drink.
Wastewater treatment plant and system operators remove pollutants from domestic and industrial waste. Used water, also known as wastewater, travels through sewer pipes to treatment plants where it is treated and either returned to streams, rivers, and oceans, or used for irrigation.
Work Environment for Water and Wastewater Treatment Plant and System Operators[About this section] [To Top]
Water and wastewater treatment plant and system operators hold about 125,200 jobs. The largest employers of water and wastewater treatment plant and system operators are as follows:
| Local government, excluding education and hospitals | 75% |
| Utilities | 12% |
| Manufacturing | 4% |
Water and wastewater treatment plant and system operators work both indoors and outdoors. Their work is physically demanding and usually is performed in locations that are unclean or difficult to access. Operators may be exposed to noise from machinery and are often exposed to unpleasant odors.
Injuries and Illnesses for Water and Wastewater Treatment Plant and System Operators
Water and waste treatment plant and system operators have a higher rate of injuries and illnesses than the national average. They must pay close attention to safety procedures because of hazardous conditions, such as slippery walkways, the presence of dangerous gases, and malfunctioning equipment.
Operators are trained in emergency management procedures and use safety equipment to protect their health, as well as that of the public.
Water and Wastewater Treatment Plant and System Operator Work Schedules
Water and waste treatment plant and system operators typically work full time. Plants operate 24 hours a day, 7 days a week. In small plants, operators are likely to work during the day and be on call nights and weekends. In medium- and large-size plants that require constant monitoring, operators work in shifts to control the plant at all hours.
Occasionally, operators must work during emergencies. For example, they may need to work during weather conditions that cause large amounts of storm water or wastewater to flow into sewers, exceeding a plant's capacity. Emergencies also may be caused by malfunctions within a plant, such as chemical leaks or oxygen deficiencies.
How to Become a Water or Wastewater Treatment Plant and System Operator[About this section] [To Top]
Get the education you need: Find schools for Water and Wastewater Treatment Plant and System Operators near you!
Water and wastewater treatment plant and system operators typically need at least a high school diploma or equivalent and a license to work. They also complete on-the-job training.
Education for Water and Wastewater Treatment Plant and System Operators
Water and wastewater treatment plant and system operators typically need a high school diploma or equivalent to become operators. Employers may prefer applicants who have completed a certificate, an associate's, or a bachelor's degree program in a related field such as environmental science or wastewater treatment technology.
Water and Wastewater Treatment Plant and System Operator Training
Water and wastewater treatment plant and system operators need long-term on-the-job training to become fully qualified. Water and wastewater treatment is a complex process. Trainees learn their skills on the job under the direction of an experienced operator. The trainees learn by observing and doing routine tasks, such as recording meter readings, taking samples of wastewater and sludge, and performing simple maintenance and repair work on plant equipment. They also learn about industrial safety and how to use personal protective equipment.
Larger treatment plants usually combine this on-the-job training with formal classroom or self-paced study programs. As plants get larger and more complicated, operators need more skills before they are allowed to work without supervision.
Licenses, Certifications, and Registrations for Water and Wastewater Treatment Plant and System Operators
Water and wastewater treatment plant and system operators must be licensed by the state in which they work. Requirements and standards vary widely depending on the state.
State licenses typically have multiple levels, which indicate the operator's experience and training. Although some states will honor licenses from other states, operators who move from one state to another may need to take a new set of exams to become licensed in their new state.
Advancement for Water and Wastewater Treatment Plant and System Operators
Most states have multiple levels of licenses for water and wastewater treatment plant and system operators. Each increase in license level allows the operator to perform more complicated processes without supervision.
At the largest plants, operators who have the highest license level work as shift supervisors and may be in charge of large teams of operators.
Important Qualities for Water and Wastewater Treatment Plant and System Operators
Analytical skills. Water and wastewater treatment plant and system operators must conduct tests and inspections on water or wastewater and evaluate the results.
Detail oriented. Water and wastewater treatment plant and system operators must monitor machinery, gauges, dials, and controls to ensure everything is operating properly. Because tap water and wastewater are highly regulated by the U.S. Environmental Protection Agency, operators must be careful and thorough in completing these tasks.
Math skills. Water and wastewater treatment plant and system operators must have the ability to apply data to formulas that determine treatment requirements, flow levels, and concentration levels.
Mechanical skills. Water and wastewater treatment plant and system operators must know how to work with machines and use tools. They must be familiar with how to operate, repair, and maintain equipment.
Water and Wastewater Treatment Plant and System Operator Salaries[About this section] [More salary/earnings info] [To Top]
The median annual wage for water and wastewater treatment plant and system operators is $47,880. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $30,070, and the highest 10 percent earned more than $77,170.
The median annual wages for water and wastewater treatment plant and system operators in the top industries in which they work are as follows:
| Local government, excluding education and hospitals | $47,880 |
| Utilities | $47,840 |
| Manufacturing | $47,840 |
Water and waste treatment plant and system operators work full time. Plants operate 24 hours a day, 7 days a week. In small plants, operators are likely to work during the day and be on call nights and weekends. In medium- and large-size plants that require constant monitoring, operators work in shifts to control the plant at all hours.
Occasionally, operators must work during emergencies. For example, they may need to work during weather conditions that cause large amounts of storm water or wastewater to flow into sewers, exceeding a plant's capacity. Emergencies also may be caused by malfunctions within a plant, such as chemical leaks or oxygen deficiencies.
Job Outlook for Water and Wastewater Treatment Plant and System Operators[About this section] [To Top]
Employment of water and wastewater treatment plant and system operators is projected to decline 7 percent over the next ten years
Despite declining employment, about 10,800 openings for water and wastewater treatment plant and system operators are projected each year, on average, over the decade. All of those openings are expected to result from the need to replace workers who transfer to other occupations or exit the labor force, such as to retire.
Employment of Water and Wastewater Treatment Plant and System Operators
As water and wastewater treatment plants become more advanced with automated systems to manage treatment processes, fewer workers may be needed. Although some work can be automated, plants will still need skilled workers to operate increasingly complex controls and water and wastewater systems.
| Occupational Title | Employment, 2021 | Projected Employment, 2031 | Change, 2021-31 | |
|---|---|---|---|---|
| Percent | Numeric | |||
| Water and wastewater treatment plant and system operators | 125,200 | 116,600 | -7 | -8,600 |
More Water and Wastewater Treatment Plant and System Operator Information[About this section] [To Top]
For information on employment opportunities, contact state or local water pollution control agencies, state water and wastewater operator associations, state environmental training centers, or local offices of the state employment service.
For information related to a career as a water or wastewater treatment plant and system operator, visit
American Water Works Association
The National Rural Water Association
For more information on certification for water or wastewater treatment plant and system operator, visit
A portion of the information on this page is used by permission of the U.S. Department of Labor.