How much does a water and wastewater treatment plant and system operator make in Washington?
$80,800a year
Median yearly pay for water and wastewater treatment plant and system operators in Washington. That is $38.85 an hour or $6,733 a month.
- Hourly
- $38.85
- Vs. national median
- +35%
- Rank among states
- 3 of 50
- Jobs in the state
- 2,030
Pay range
Lowest 10%: $57,720Median: $80,800Highest 10%: $106,300
| Percentile | Yearly | Hourly | |
|---|---|---|---|
| 10th | $57,720 | $27.75 | |
| 25th | $67,690 | $32.54 | |
| Median | $80,800 | $38.85 | |
| 75th | $99,940 | $48.05 | |
| 90th | $106,300 | $51.09 |
Cities in Washington
Metro areas, median yearly pay.
| Seattle, WA | $99,010 |
| Olympia, WA | $88,270 |
| Wenatchee, WA | $87,840 |
| Mount Vernon, WA | $87,310 |
| Portland, OR | $83,860 |
| Bellingham, WA | $81,430 |
| Spokane, WA | $81,240 |
| Kennewick, WA | $80,750 |
| Bremerton, WA | $79,100 |
| Yakima, WA | $75,290 |
| Longview, WA | $64,420 |
| Lewiston, ID | $61,830 |
Nearby in the ranking
States with similar pay for water and wastewater treatment plant and system operators.
| 1. California | $81,770 |
| 2. Nevada | $81,440 |
| 3. Washington | $80,800 |
| 4. Connecticut | $78,820 |
| 5. New Jersey | $78,760 |
| 6. Minnesota | $74,670 |
Frequently asked questions
How much does a water and wastewater treatment plant and system operator make an hour in Washington?
The median hourly pay in Washington is $38.85 ($80,800 a year).
Do water and wastewater treatment plant and system operators make more in Washington than the national average?
Yes: $80,800 against $60,020 nationally, 35% more.
Where does Washington rank for water and wastewater treatment plant and system operator pay?
Washington ranks 3 of 50 states.
Which city in Washington pays water and wastewater treatment plant and system operators the most?
Seattle-Tacoma-Bellevue, WA, with a median of $99,010 a year.
Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS): pay in May 2025, published by BLS in 2026. Hourly pay is the yearly figure divided by 2,080 hours.