Salaries › Water Treatment Operator › Missouri
Water Treatment Operator Salary in Missouri (2026)
$24.01 per hour · take-home ≈ $40,897/year ($3,408/month) for a single filer
Missouri ranks 40th of 50 states for Water Treatment Operator pay, with a median about 17% below the national average. Of the 3,000 Water Treatment Operator jobs BLS counts in Missouri, the typical worker earns $49,940 a year — though pay ranges from $38,600 for newcomers to $64,930 at the top.
Water Treatment Operator pay range in Missouri
| Percentile | Annual wage | Meaning |
| 10th percentile (entry) | $38,600 | Lowest-paid 10% earn less than this |
| 25th percentile | $45,460 | A quarter earn less |
| Median (50th) | $49,940 | Half earn more, half earn less |
| 75th percentile | $58,400 | Top quarter starts here |
| 90th percentile (top) | $64,930 | Highest-paid 10% earn more than this |
BLS reports 3,000 Water Treatment Operator jobs in Missouri (occupation code 51-8031, “Water and Wastewater Treatment Plant and System Operators”).
Gross vs. take-home in Missouri
A median Water Treatment Operator salary of $49,940 doesn’t all reach your bank account. After federal income tax, Social Security, and Medicare, plus Missouri state income tax, a single filer keeps about $40,897 — an effective tax rate of 18.1%.
| Gross (median) | $49,940 |
| Federal income tax | −$3,813 |
| Social Security + Medicare | −$3,820 |
| Missouri state income tax | −$1,410 |
| Take-home (annual) | $40,897 |
| Take-home (monthly) | $3,408 |
Want your exact numbers — married, 401(k), different salary? Use the free Missouri paycheck calculator on PaycheckTally.
Frequently asked questions
- How much does a Water Treatment Operator make in Missouri?
- The median Water Treatment Operator salary in Missouri is $49,940 per year ($24.01 per hour) according to the latest BLS data. The middle 50% earn between $45,460 and $58,400.
- What is the take-home pay for a Water Treatment Operator in Missouri?
- On the median salary of $49,940, a single filer in Missouri takes home about $40,897 per year ($3,408 per month) after federal tax, FICA, and state income tax — an effective tax rate of 18.1%.
- How many Water Treatment Operator jobs are there in Missouri?
- BLS counts 3,000 Water Treatment Operator jobs in Missouri in the latest survey (May 2025).
Top-paying states for Water Treatment Operators
Other salaries in Missouri
Sources and methodology
Wage and employment figures: BLS OEWS May 2025 (state file, released April 2026) — the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics survey, the most authoritative public salary dataset. Take-home estimate: 2026 federal brackets, FICA, and verified Missouri state tax rules (single filer, standard deduction, no credits or local taxes). Estimates only — not financial advice.
- BLS OEWS — official occupational wage data.
- PaycheckTally — interactive 2026 take-home calculator for Missouri.