How Much Do Water and Wastewater Treatment Plant and System Operators Make in Washington?
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 Washington earns $80,800 per year and takes home $65,673 ($5,473/month) — a keep-rate of 81.3%, with 2,030 employed in the state.
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| Gross pay | $6,733.33 |
| Federal income tax | $745.49 |
| Social Security | $417.47 |
| Medicare | $97.63 |
| Washington state income tax | $0.00 |
| You keep | $5,472.74 |
How much do Water and Wastewater Treatment Plant and System Operators make in Washington?
The median Water and Wastewater Treatment Plant and System Operators in Washington earns $80,800 per year (BLS May 2025), about $38.85 per hour.
What is that after taxes?
$80,800 gross in Washington keeps $65,673 after federal income tax ($8,946), FICA ($6,181) and state income tax ($0) — $5,473 per month, a 81.3% keep-rate.
How does Washington compare to the national median for Water and Wastewater Treatment Plant and System Operators?
The Washington median is $20,780 above 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 · Washington paycheck calculator · Washington minimum wage