The median hourly wage for Water and Wastewater Treatment Plant and System Operators in Illinois is $33.21/hour, based on 2024 BLS data.
Data: BLS OEWS 2024 • Illinois hourly wage data • Updated 2026-04-06
| Percentile | Hourly Rate | Weekly (×40h) | Monthly (×173.3h) | Annual (×2,080h) |
|---|---|---|---|---|
| Entry-Level (P10) | $19.12 | $765 | $3313 | $39,760 |
| Q1 (P25) | $25.2 | $1008 | $4368 | $52,410 |
| Median (P50) | $33.21 | $1328 | $5756 | $69,070 |
| Q3 (P75) | $38.26 | $1530 | $6632 | $79,580 |
| Senior (P90) | $46.7 | $1868 | $8094 | $97,130 |
Note: Weekly = hourly × 40 hours. Monthly = hourly × 173.3 hours (avg). Annual = hourly × 2,080 hours.
The median hourly wage for Water and Wastewater Treatment Plant and System Operators in Illinois is $33.21/hour (2024 BLS data). This equals approximately $69,070.0 per year based on 2,080 work hours.
The median hourly rate for Water and Wastewater Treatment Plant and System Operators in Illinois is $33.21/hr compared to the national average of $26.73/hr — higher by $6.48/hr.
Entry-level Water and Wastewater Treatment Plant and System Operators professionals in Illinois earn approximately $19.12/hour (10th percentile), which equals $39,760.0/year. Senior-level professionals earn $46.7/hour.
Senior-level Water and Wastewater Treatment Plant and System Operators professionals in Illinois (90th percentile) earn approximately $46.7/hour, or $97,130.0/year.
Hourly wages are calculated by dividing annual salary by 2,080 hours (52 weeks × 40 hours/week). This is the standard full-time conversion used by the Bureau of Labor Statistics.
Hourly wage data sourced from the U.S. Bureau of Labor Statistics (BLS) Occupational Employment and Wage Statistics (OEWS) 2024. This data reflects median and percentile wages for Water and Wastewater Treatment Plant and System Operators (SOC 518031) in Illinois.