The median annual wage for Water and Wastewater Treatment Plant and System Operators in Columbia, MO is $48,690 (May 2024 BLS OES). The mean (average) is $54,240.
Pay spans roughly $38,370 at the 10th percentile to $77,960 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $23.41 per hour. An estimated 90 people work as water and wastewater treatment plant and system operators in Columbia, MO.
| Median (annual) | $48,690 |
| Mean (annual) | $54,240 |
| Median (hourly) | $23.41 |
| 10th percentile | $38,370 |
| 90th percentile | $77,960 |
| Employment | 90 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.