How Much Do Water and Wastewater Treatment Plant and System Operators Make in Missouri?
Median wage from BLS May 2025 — and the after-tax number the salary sites skip. Tax year 2026.
Quick answer
According to payandtaxes.com's analysis of BLS May 2025 data and 2026 tax law, the median Water and Wastewater Treatment Plant and System Operators in Missouri earns $49,940 per year and takes home $40,897 ($3,408/month) — a keep-rate of 81.9%, with 3,000 employed in the state.
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| Gross pay | $4,161.67 |
| Federal income tax | $317.73 |
| Social Security | $258.02 |
| Medicare | $60.34 |
| Missouri state income tax | $117.49 |
| You keep | $3,408.08 |
How much do Water and Wastewater Treatment Plant and System Operators make in Missouri?
The median Water and Wastewater Treatment Plant and System Operators in Missouri earns $49,940 per year (BLS May 2025), about $24.01 per hour.
What is that after taxes?
$49,940 gross in Missouri keeps $40,897 after federal income tax ($3,813), FICA ($3,820) and state income tax ($1,410) — $3,408 per month, a 81.9% keep-rate.
How does Missouri compare to the national median for Water and Wastewater Treatment Plant and System Operators?
The Missouri median is $10,080 below the national median of $60,020.
Which state pays Water and Wastewater Treatment Plant and System Operators the most?
California has the highest median gross for Water and Wastewater Treatment Plant and System Operators at $81,770 — but compare take-home, not gross: state taxes change the order.
Water and Wastewater Treatment Plant and System Operators salary in every state · Missouri paycheck calculator · Missouri minimum wage