How much does a water and wastewater treatment plant and system operator make in Illinois?
$67,810a year
Median yearly pay for water and wastewater treatment plant and system operators in Illinois. That is $32.60 an hour or $5,651 a month.
- Hourly
- $32.60
- Vs. national median
- +13%
- Rank among states
- 10 of 50
- Jobs in the state
- 3,500
Pay range
Lowest 10%: $42,240Median: $67,810Highest 10%: $103,700
| Percentile | Yearly | Hourly | |
|---|---|---|---|
| 10th | $42,240 | $20.31 | |
| 25th | $55,260 | $26.57 | |
| Median | $67,810 | $32.60 | |
| 75th | $83,140 | $39.97 | |
| 90th | $103,700 | $49.85 |
Cities in Illinois
Metro areas, median yearly pay.
| Chicago, IL | $79,290 |
| Bloomington, IL | $79,220 |
| Rockford, IL | $77,830 |
| Davenport, IA | $63,440 |
| Decatur, IL | $62,150 |
| Champaign, IL | $61,720 |
| Peoria, IL | $60,380 |
| Kankakee, IL | $59,870 |
| Springfield, IL | $58,990 |
| St. Louis, MO | $57,850 |
| Paducah, KY | $52,160 |
| Cape Girardeau, MO | $50,960 |
Nearby in the ranking
States with similar pay for water and wastewater treatment plant and system operators.
| 7. Colorado | $74,200 |
| 8. Oregon | $69,720 |
| 9. Massachusetts | $68,550 |
| 10. Illinois | $67,810 |
| 11. Hawaii | $65,560 |
| 12. Delaware | $64,940 |
| 13. New York | $63,990 |
Frequently asked questions
How much does a water and wastewater treatment plant and system operator make an hour in Illinois?
The median hourly pay in Illinois is $32.60 ($67,810 a year).
Do water and wastewater treatment plant and system operators make more in Illinois than the national average?
Yes: $67,810 against $60,020 nationally, 13% more.
Where does Illinois rank for water and wastewater treatment plant and system operator pay?
Illinois ranks 10 of 50 states.
Which city in Illinois pays water and wastewater treatment plant and system operators the most?
Chicago-Naperville-Elgin, IL-IN, with a median of $79,290 a year.
Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS): pay in May 2025, published by BLS in 2026. Hourly pay is the yearly figure divided by 2,080 hours.