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Water and Wastewater Treatment Plant and System Operators Salary in Missouri
Last updated: 2025 BLS data · Page refreshed:
How much do Water and Wastewater Treatment Plant and System Operators make in Missouri?
Last updated: 2025 data from the Bureau of Labor Statistics
$49,940
Median Annual Salary
▼
-5.8% vs 2024
$53,190
Mean Salary
$49,940
Median Salary
$24.01
Hourly Rate
3,000 people work as Water and Wastewater Treatment Plant and System Operators in Missouri
Water and Wastewater Treatment Plant and System Operators salary by percentile in Missouri
BLS-reported salary distribution — from entry-level (10th percentile) to top earners (90th percentile).
Water and Wastewater Treatment Plant and System Operators in Missouri earn a median salary of $49,940 per year ($4,161/month).
This is 16.7% below the national average of $59,966.
Missouri ranks #40 out of 50 states for Water and Wastewater Treatment Plant and System Operators pay.
Approximately 3,000 people work in this occupation across Missouri.
Salaries decreased by 5.8% compared to 2024.
About This Job: Water and Wastewater Treatment Plant and System Operators
Operate or control an entire process or system of machines, often through the use of control boards, to transfer or treat water or wastewater.
Top Skills
Operations Monitoring
3.88
Operation and Control
3.75
Monitoring
3.62
Active Listening
3.38
Quality Control Analysis
3.38
Key Knowledge Areas
Chemistry
3.98
Biology
3.9
Mechanical
3.89
Mathematics
3.62
Public Safety and Security
3.48
Typical Education: High School Diploma or Equivalent
(41.8% of workers)
Salary Range: Water and Wastewater Treatment Plant and System Operators in Missouri
Salaries for Water and Wastewater Treatment Plant and System Operators in Missouri range from $38,600 at the 10th percentile (entry level) to $64,930 at the 90th percentile (experienced). The middle 50% earn between $45,460 and $58,400.
Median $49,940
P10: $38,600P25: $45,460P75: $58,400P90: $64,930
10th
$38,600
25th
$45,460
Median
$49,940
75th
$58,400
90th
$64,930
Percentile
Annual Salary
Hourly Rate
Monthly
10th Percentile (Entry Level)
$38,600
$18.56
$3,216
25th Percentile
$45,460
$21.86
$3,788
Median (50th)
$49,940
$24.01
$4,161
75th Percentile
$58,400
$28.08
$4,866
90th Percentile (Experienced)
$64,930
$31.22
$5,410
Note: The mean (average) salary of $53,190 differs from the median because salary distributions are typically skewed by high earners.
📊 How Does This Compare?
#40
Missouri ranks #40 of 50 states
$59,966
National avg. for Water and Wastewater Treatment Plant and System Operators
How much do Water and Wastewater Treatment Plant and System Operators make in Missouri?
The median annual salary for Water and Wastewater Treatment Plant and System Operators in Missouri is $49,940 as of 2025. The average (mean) salary is $53,190.
What is the salary range for a Water and Wastewater Treatment Plant and System Operators in Missouri?
Salaries for Water and Wastewater Treatment Plant and System Operators in Missouri range from $38,600 at the 10th percentile to $64,930 at the 90th percentile. The middle 50% earn between $45,460 and $58,400.
What is the starting salary for a Water and Wastewater Treatment Plant and System Operators in Missouri?
Entry-level Water and Wastewater Treatment Plant and System Operators positions in Missouri typically start around $38,600 (10th percentile). With some experience, salaries rise to $45,460 (25th percentile).
How many people work as Water and Wastewater Treatment Plant and System Operators in Missouri?
According to 2025 BLS data, approximately 3,000 people are employed as Water and Wastewater Treatment Plant and System Operators in Missouri.
What is the hourly rate for a Water and Wastewater Treatment Plant and System Operators in Missouri?
Based on a standard 2,080-hour work year, the median hourly rate for a Water and Wastewater Treatment Plant and System Operators in Missouri is approximately $24.01 per hour.
Salary data is sourced from the U.S. Bureau of Labor Statistics (BLS) Occupational Employment and Wage Statistics (OEWS) survey, 2025 estimates. The OEWS survey covers approximately 1.1 million establishments nationwide.
Annual salaries are calculated based on a standard 2,080-hour work year. Actual compensation may vary based on experience, education, employer, and local market conditions. Figures do not include benefits, bonuses, or overtime pay.
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