How much does a water and wastewater treatment plant and system operator make in St. Louis?
Median yearly pay for water and wastewater treatment plant and system operators in the St. Louis, MO-IL metro area. That is $27.81 an hour or $4,821 a month.
- Hourly
- $27.81
- Vs. national median
- -4%
- Rank among cities
- 210 of 367
- Jobs in the area
- 1,220
| Percentile | Yearly | Hourly | |
|---|---|---|---|
| 10th | $44,780 | $21.53 | |
| 25th | $51,540 | $24.78 | |
| Median | $57,850 | $27.81 | |
| 75th | $69,360 | $33.35 | |
| 90th | $81,660 | $39.26 |
Other cities in Missouri
Median yearly pay for water and wastewater treatment plant and system operators.
| Kansas City, MO | $52,770 |
| Cape Girardeau, MO | $50,960 |
| St. Joseph, MO | $50,670 |
| Columbia, MO | $50,270 |
| Joplin, MO | $49,750 |
| Springfield, MO | $49,270 |
| Jefferson City, MO | $48,550 |
Related jobs in St. Louis
Same field, median yearly pay.
| Power Plant Operator | $101,800 |
| Computer Numerically Controlled Tool Programmer | $94,230 |
| Power Distributor and Dispatcher | $85,470 |
| Stationary Engineer and Boiler Operator | $75,610 |
| First-Line Supervisors of Production and Operating Worker | $75,210 |
| Plant and System Operator | $69,910 |
| Machinist | $62,210 |
| Multiple Machine Tool Setter | $62,090 |
| Tool Grinder | $61,550 |
| Welding | $60,600 |
Frequently asked questions
How much does a water and wastewater treatment plant and system operator make an hour in St. Louis?
The median hourly pay in the St. Louis, MO-IL metro area is $27.81 ($57,850 a year).
Do water and wastewater treatment plant and system operators make more in St. Louis than the national average?
No: $57,850 against $60,020 nationally, 4% less.
How does St. Louis compare with the rest of Missouri?
The median in Missouri is $49,940, so St. Louis pays 16% more.
Where does St. Louis rank for water and wastewater treatment plant and system operator pay?
210 of 367 metro areas with data.
How much does a water and wastewater treatment plant and system operator make starting out in St. Louis?
The lowest-paid 10% make $44,780 or less a year; the top 10% make $81,660 or more.
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.