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 ILLINOIS

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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
          Illinois Hourly $20.31 $26.57 $32.60 $39.97 $49.85
          Yearly $42,240 $55,260 $67,810 $83,140 $103,690
          West Central Illinois Balance of State Hourly $19.00 $22.02 $27.86 $31.86 $35.62
          Yearly $39,510 $45,810 $57,950 $66,270 $74,080
          Springfield, IL Metro Area Hourly $22.19 $27.94 $28.36 $40.03 $48.10
          Yearly $46,160 $58,110 $58,990 $83,250 $100,060
          Rockford, IL Metro Area Hourly $25.76 $30.04 $37.42 $43.02 $43.10
          Yearly $53,580 $62,490 $77,830 $89,480 $89,640
          South Illinois Balance of State Hourly $19.00 $21.76 $26.96 $30.33 $37.24
          Yearly $39,510 $45,250 $56,080 $63,080 $77,470
          St. Louis, MO-IL Metro Area Hourly $21.53 $24.78 $27.81 $33.34 $39.26
          Yearly $44,780 $51,540 $57,850 $69,360 $81,660
          Peoria, IL Metro Area Hourly $18.31 $24.30 $29.03 $39.36 $41.04
          Yearly $38,080 $50,540 $60,380 $81,870 $85,360
          Davenport-Moline-Rock Island, IA-IL Metro Area Hourly $23.73 $25.77 $30.50 $34.10 $40.26
          Yearly $49,350 $53,590 $63,440 $70,930 $83,740
          Kankakee, IL Metro Area Hourly $17.37 $23.13 $28.78 $35.83 $38.28
          Yearly $36,120 $48,120 $59,870 $74,520 $79,610
          Decatur, IL Metro Area Hourly $24.50 $26.23 $29.88 $35.22 $38.59
          Yearly $50,950 $54,550 $62,150 $73,270 $80,270
          Champaign-Urbana, IL Metro Area Hourly $18.59 $25.33 $29.68 $37.09 $41.20
          Yearly $38,670 $52,690 $61,720 $77,150 $85,700
          Bloomington, IL Metro Area Hourly $21.68 $31.13 $38.09 $39.98 $47.71
          Yearly $45,100 $64,760 $79,220 $83,150 $99,230
          Northwest Illinois Balance of State Hourly $19.01 $23.04 $29.33 $38.98 $66.63
          Yearly $39,540 $47,910 $61,000 $81,070 $138,590
          Cape Girardeau, MO-IL Metro Area Hourly $19.23 $22.75 $24.50 $29.42 $35.15
          Yearly $40,000 $47,320 $50,960 $61,200 $73,120
          East Central Illinois Balance of State Hourly $15.00 $20.31 $28.18 $31.66 $36.84
          Yearly $31,200 $42,240 $58,610 $65,860 $76,630
          Chicago-Naperville-Elgin, IL-IN Metro Area Hourly $24.37 $29.86 $38.12 $46.28 $53.29
          Yearly $50,690 $62,120 $79,290 $96,250 $110,830
          Paducah, KY-IL Metro Area Hourly $16.56 $18.81 $25.08 $30.53 $36.61
          Yearly $34,440 $39,120 $52,160 $63,500 $76,140