Water and Wastewater Treatment Plant and System Operators pay in St. Louis
In St. Louis (MO), the median pay for water and wastewater treatment plant and system operators is $27.81 an hour ($57,850 a year). About 1,220 people work in this job there.
That is 4% lower than the U.S. median ($60,020). It is 16% higher than the Missouri median ($49,940).
Pay range for water and wastewater treatment plant and system operators in St. Louis (MO)
| Earns more than | Hourly | Yearly |
|---|---|---|
| 10% of workers | $21.53 | $44,780 |
| 25% of workers | $24.78 | $51,540 |
| Half of workers (median) | $27.81 | $57,850 |
| 75% of workers | $33.34 | $69,360 |
| 90% of workers | $39.26 | $81,660 |
Water and Wastewater Treatment Plant and System Operators pay in Missouri metro areas
| Metro area | Median yearly pay | People in this job |
|---|---|---|
| St. Louis (this page) | $57,850 | 1,220 |
| Kansas City | $52,770 | 740 |
| Cape Girardeau | $50,960 | 60 |
| St. Joseph | $50,670 | 90 |
| Columbia | $50,270 | 90 |
| Joplin | $49,750 | 100 |
| Springfield | $49,270 | 150 |
| Jefferson City | $48,550 | 70 |
Missouri unemployment rate: 3.5% (August 2026), U.S. Bureau of Labor Statistics.
Education, experience and outlook for water and wastewater treatment plant and system operators
- Typical education to start: High school diploma or equivalent (BLS)
- Related work experience most have: 6 months to 1 year (O*NET)
- Training on the job: Long-term on-the-job training (BLS)
- Job outlook: -5.7% over ten years, declining · about 10,000 openings a year (BLS)
Related jobs in St. Louis (MO)
| Job | Median yearly pay |
|---|---|
| Civil Engineers | $96,830 |
| Chemical Equipment Operators and Tenders | $53,500 |
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Post a job freeFind jobsCheck pay for any jobSource: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 estimates. Figures are for wage and salary workers and do not include the self-employed. The median is the middle wage: half earn more, half earn less. Other job titles: O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license; O*NET® is a trademark of USDOL/ETA. JAI Bot has modified this information; USDOL/ETA has not approved, endorsed, or tested these modifications.