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Water and Wastewater Treatment Plant and System Operators average salary by city in Washington
- Seattle$92,380
- Olympia$87,930
- Mount Vernon$83,270
- Wenatchee$82,360
- Bellingham$81,860
- Spokane$77,350
- Bremerton$76,950
- Kennewick$75,340
- Longview$72,250
- Yakima$71,340
Pay, take-home pay and cost of living
| City | Average | Median | 25th pct. | Take-home* | Cost of living |
|---|---|---|---|---|---|
| Seattle | $92,380 | $99,010 | $78,170 | $73,819 | 111 |
| Olympia | $87,930 | $88,270 | $77,850 | $70,689 | 104 |
| Mount Vernon | $83,270 | $87,310 | $72,120 | $67,410 | 102 |
| Wenatchee | $82,360 | $87,840 | $72,840 | $66,770 | 104 |
| Bellingham | $81,860 | $81,430 | $74,100 | $66,419 | 103 |
| Spokane | $77,350 | $81,240 | $69,550 | $63,246 | 100 |
| Bremerton | $76,950 | $79,100 | $65,850 | $62,964 | 106 |
| Kennewick | $75,340 | $80,750 | $64,880 | $61,832 | 100 |
| Longview | $72,250 | $64,420 | $64,420 | $59,658 | 98 |
| Yakima | $71,340 | $75,290 | $57,730 | $59,018 | 96 |
*Average salary after federal and state taxes for a single filer; Washington has no state income tax; Washington's WA Cares (0.58%) and Paid Family and Medical Leave payroll premiums are not included. Cost of living: BEA price parity, U.S. = 100.
Water and Wastewater Treatment Plant and System Operators salary in other states
Water and Wastewater Treatment Plant and System Operators salary by city and state
More about pay in Washington
Sources and how to read this page
- Wages: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 estimates for metropolitan areas. SOC code 51-8031.
- U.S. and statewide figures: BLS OEWS national and state estimates, May 2025, every employer including rural areas.
- Cost of living: Bureau of Economic Analysis regional price parities (RPP), 2024; 100 = U.S. average.
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