Wage information comes from the Bureau of Labor Statistics, Occupational Employment Statistics Program. The OES is a semi-annual survey that provides wage and employment statistics for the nation, each state, and sub-state regions.

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          Wages for Water and Wastewater Treatment Plant and System Operators in WASHINGTON

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          Location Pay
          Period          		 2025
          10% 25% Median 75% 90%
          United States Hourly $18.80 $23.10 $28.86 $35.95 $43.78
          Yearly $39,110 $48,040 $60,020 $74,780 $91,060
          Washington Hourly $27.75 $32.54 $38.85 $48.05 $51.09
          Yearly $57,720 $67,690 $80,800 $99,940 $106,270
          Lewiston, ID-WA Metro Area Hourly $20.17 $23.76 $29.72 $30.92 $34.90
          Yearly $41,950 $49,410 $61,830 $64,310 $72,590
          Wenatchee-East Wenatchee, WA Metro Area Hourly $30.40 $35.02 $42.23 $44.63 $48.73
          Yearly $63,230 $72,840 $87,840 $92,820 $101,350
          Western Washington Balance of State Hourly $24.75 $29.00 $35.69 $38.10 $44.61
          Yearly $51,480 $60,310 $74,230 $79,250 $92,780
          Bremerton-Silverdale-Port Orchard, WA Metro Area Hourly $28.88 $31.66 $38.03 $41.70 $48.23
          Yearly $60,070 $65,850 $79,100 $86,740 $100,320
          Portland-Vancouver-Hillsboro, OR-WA Metro Area Hourly $25.81 $31.18 $40.32 $42.25 $48.70
          Yearly $53,690 $64,860 $83,860 $87,880 $101,290
          Longview-Kelso, WA Metro Area Hourly $27.87 $30.97 $30.97 $38.25 $43.90
          Yearly $57,980 $64,420 $64,420 $79,560 $91,300
          Yakima, WA Metro Area Hourly $26.96 $27.75 $36.20 $37.31 $42.53
          Yearly $56,090 $57,730 $75,290 $77,600 $88,470
          Kennewick-Richland, WA Metro Area Hourly $26.71 $31.19 $38.82 $40.85 $44.25
          Yearly $55,560 $64,880 $80,750 $84,960 $92,040
          Seattle-Tacoma-Bellevue, WA Metro Area Hourly $30.07 $37.58 $47.60 $50.01 $57.21
          Yearly $62,540 $78,170 $99,010 $104,020 $119,000
          Mount Vernon-Anacortes, WA Metro Area Hourly $28.69 $34.67 $41.98 $48.37 $49.06
          Yearly $59,670 $72,120 $87,310 $100,610 $102,050
          Spokane-Spokane Valley, WA Metro Area Hourly $26.70 $33.44 $39.06 $43.04 $45.92
          Yearly $55,530 $69,550 $81,240 $89,520 $95,520
          Bellingham, WA Metro Area Hourly $30.84 $35.63 $39.15 $41.72 $48.70
          Yearly $64,150 $74,100 $81,430 $86,770 $101,300
          Olympia-Lacey-Tumwater, WA Metro Area Hourly $31.59 $37.43 $42.44 $48.46 $48.46
          Yearly $65,710 $77,850 $88,270 $100,800 $100,800
          Eastern Washington Balance of State Hourly $26.93 $26.93 $30.96 $37.72 $38.78
          Yearly $56,010 $56,010 $64,390 $78,460 $80,670
          Walla Walla, WA Metro Area Hourly N/A N/A N/A N/A N/A
          Yearly N/A N/A N/A N/A N/A