Water and Wastewater Treatment Plant and System Operators Salary in Illinois

BLS OEWS May 2025 • 12 metro areas • Illinois

Water and Wastewater Treatment Plant and System Operators in Illinois earn a median salary of $64,437 per year on average across 12 metro and nonmetro areas, +10.6% vs the national median of $58,260. An estimated 3,710 water and wastewater treatment plant and system operators are employed across Illinois, with salaries ranging from $57,020 to $80,600 depending on location.

$64,437 Avg median salary in Illinois
$80,600 Highest paying metro
$57,020 Lowest paying metro
3,710 Employed in Illinois

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      Water and Wastewater Treatment Plant and System Operators salaries by city in Illinois

      Metro area Median salary 25th pct 75th pct Employed
      Bloomington, IL $80,600 $67,610 $84,220 70
      Rockford, IL $79,410 $60,530 $80,300 80
      Chicago, IL-IN $77,190 $61,100 $93,840 1,970
      Decatur, IL $62,150 $54,550 $73,270 50
      Kankakee, IL $61,290 $48,480 $93,450 70
      Champaign, IL $61,210 $49,820 $66,800 80
      Peoria, IL $60,880 $49,160 $73,610 110
      South Illinois $59,010 $48,420 $62,510 300
      Springfield, IL $58,990 $58,110 $83,250 50
      East Central Illinois $58,030 $48,090 $63,790 380
      West Central Illinois $57,460 $47,200 $62,870 360
      Northwest Illinois $57,020 $47,450 $63,270 190

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