Salary Survey: Water and Wastewater Treatment Plant and System Operators in Illinois
| Average Annual Salary | $54,040.00 | Average Hourly Salary | $25.98 | Jobs Per Thousand | 0.661 |
| Annual Percentile | |||||
| 10 Percentile | 25 Percentile | 50 Percentile | 75 Percentile | 90 Percentile | |
| $26,940.00 | $41,710.00 | $53,850.00 | $65,390.00 | $80,440.00 | |
| Hourly Percentile | |||||
| 10 Percentile | 25 Percentile | 50 Percentile | 75 Percentile | 90 Percentile | |
| $12.95 | $20.05 | $25.89 | $31.44 | $38.68 | |