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Water and Wastewater Treatment Plant and System Operators average salary by city in Illinois
- Chicago$80,080
- Rockford$76,090
- Bloomington$73,300
- Springfield$67,240
- Decatur$66,350
- Champaign$64,580
- Peoria$64,280
- Kankakee$59,660
Pay, take-home pay and cost of living
| City | Average | Median | 25th pct. | Take-home* | Cost of living |
|---|---|---|---|---|---|
| Chicago | $80,080 | $79,290 | $62,120 | $61,343 | 104 |
| Rockford | $76,090 | $77,830 | $62,490 | $58,734 | 92 |
| Bloomington | $73,300 | $79,220 | $64,760 | $56,909 | 94 |
| Springfield | $67,240 | $58,990 | $58,110 | $52,946 | 93 |
| Decatur | $66,350 | $62,150 | $54,550 | $52,349 | 88 |
| Champaign | $64,580 | $61,720 | $52,690 | $51,014 | 93 |
| Peoria | $64,280 | $60,380 | $50,540 | $50,788 | 91 |
| Kankakee | $59,660 | $59,870 | $48,120 | $47,305 | 96 |
*Average salary after federal and state taxes for a single filer. 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 Illinois
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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