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Municipal water utilities
DC Water, Los Angeles Department of Water and Power, New York City Department of Environmental Protection
Water and Wastewater Treatment Plant and System Operators
These operators keep drinking water safe and sewage moving by testing samples, adjusting treatment chemicals, and watching pumps, gauges, and control panels. The work is distinct because a small mistake can affect public health or trigger a compliance problem, while the tradeoff is that the job is hands-on, tightly regulated, and often tied to plants that run around the clock.
Also known as Water Treatment OperatorWastewater OperatorWater Plant OperatorWastewater Plant OperatorPlant Operator
Median Salary
$58,260
Mean $60,620
U.S. Workforce
~127K
10.7K openings per year
10-Year Growth
+-6.5%
132.4K to 123.8K
Entry Education
High school diploma or equivalent
+ None experience
What This Role Looks Like in Practice
Water and Wastewater Treatment Plant and System Operators sits in the Trades category. In practical terms, this role combines day-to-day execution, cross-team coordination, and consistent decision-making under real business constraints.
U.S. employment is currently about ~127K workers, with a median annual pay of $58,260 and roughly 10.7K openings each year. Based on BLS projections, total employment is expected to decline from 132.4 K in 2024 to 123.8K in 2034.
Most hiring paths start with High school diploma or equivalent, and employers typically expect none of related experience. Many careers in this track begin around Trainee / Helper and can progress toward Shift Supervisor / Chief Operator. High-value skills usually include Operation and Control, Operations Monitoring, and SCADA Systems & Process Controls, paired with soft skills such as Attention to detail, Clear communication, and Problem-solving.
Core Responsibilities
- Test water and wastewater samples to see whether the treatment process is working correctly.
- Add disinfectants and other treatment chemicals to clean the water and control odors.
- Watch gauges, meters, alarms, and control screens, then adjust equipment when readings drift out of range.
- Clean, lubricate, and repair pumps, filters, tanks, and other plant equipment.
Keep exploring: more Trades careers or browse all job titles.
A Day in the Life
01 Test water and wastewater samples to see whether the treatment process is working correctly.
02 Add disinfectants and other treatment chemicals to clean the water and control odors.
03 Watch gauges, meters, alarms, and control screens, then adjust equipment when readings drift out of range.
04 Clean, lubricate, and repair pumps, filters, tanks, and other plant equipment.
05 Keep written records of readings, maintenance work, and staff attendance.
06 Direct other workers during routine operations, maintenance, and shutdowns.
Industries That Hire
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Private water services
American Water, Veolia, SUEZ
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Industrial manufacturing
Coca-Cola, Anheuser-Busch, Kimberly-Clark
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Power and energy
Duke Energy, Exelon, NextEra Energy
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Food and beverage processing
PepsiCo, Nestlé, Tyson Foods
Pros and Cons
Advantages
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You can get in without a bachelor's degree: the role typically starts with a high school diploma, and 50% of workers have that background while 37.5% come in with a certificate.
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Pay is solid for a non-degree job, with a median wage of $58,260 and a mean of $60,620.
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There are about 10.7 thousand annual openings, so even with weak growth there is still regular hiring from retirements and turnover.
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The work is concrete and technical: you are not just watching a screen, you are actually testing water, changing chemical doses, and fixing pumps and filters.
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The job supports public health and infrastructure, so your work has a direct, visible impact on the community and on industrial operations.
Challenges
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Employment is projected to fall by 6.5% by 2034, which means the field is shrinking by about 8.7 thousand jobs rather than expanding.
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A lot of the best-paying advancement depends on state licenses and plant-specific training, so it can be harder to move quickly between employers or states.
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Plants run 24/7, so nights, weekends, overtime, and on-call emergency repairs are common.
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The work can be dirty and physically demanding, with chemicals, wet surfaces, tight spaces, and heavy equipment involved.
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There is a real ceiling if you stay at the operator level; moving into supervisor or manager pay usually takes additional certification and years of experience.
Career Progression
Trainee / Helper
0-2 years
$35K-$43K
Learns plant routines, sample collection, basic maintenance, and recordkeeping under close supervision.
Operator
2-6 years
$49K-$67K
Runs treatment systems, checks gauges and alarms, makes routine adjustments, and responds to shift problems.
Senior Operator / Lead Operator THIS ROLE
6-12 years
$68K-$84K
Handles more complex process changes, helps train newer staff, and covers difficult shifts or equipment issues.
Shift Supervisor / Chief Operator
10+ years
$85K-$104K
Oversees staffing, compliance, and plant performance while coordinating repairs, reports, and daily operations.
Education Paths
High school diploma or equivalent
The most common entry point, held by 50% of workers in this role, and usually paired with long-term on-the-job training.
Post-secondary certificate in water or wastewater treatment
A common route, held by 37.5% of workers in this role, and often used to get into plant work faster.
Associate degree in environmental technology or water quality
An alternate route, held by 4.17% of workers in this role, that can strengthen chemistry, lab, and troubleshooting skills.
State operator certification or license
A practical alternative for people who start with a high school diploma; many employers require it after hiring, even though it does not appear in the education distribution.
Key Skills
Technical
Operation and Control 80%
Operations Monitoring 78%
SCADA Systems & Process Controls 76%
Water Quality Testing & Lab Procedures 74%
Monitoring 72%
Pumps, Valves & Chemical Feed Systems 68%
Equipment Maintenance 62%
Quality Control Analysis 62%
Repairing 62%
CMMS Work Orders & Maintenance Logs 58%
Soft Skills
Attention to detailClear communicationProblem-solvingTeamworkCalm under pressureFollowing procedures Job Outlook and Trends
+-6.5%
Projected growth (2024-2034)
10.7K
Annual job openings
Employment is projected to rise from 132.4K to 123.8 K over the next decade, representing -6.5% growth. Around 10.7 K openings per year include both newly created roles and replacement hiring from turnover.
Remote availability is currently Rare. Demand remains strongest where employers need practical domain knowledge plus modern workflow and data skills.