The median annual wage for Water and Wastewater Treatment Plant and System Operators in Oklahoma is $41,380 (May 2024 BLS OES). The mean (average) is $44,230.
Pay spans roughly $32,700 at the 10th percentile to $60,190 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $19.89 per hour. An estimated 2,750 people work as water and wastewater treatment plant and system operators in Oklahoma.
| Median (annual) | $41,380 |
| Mean (annual) | $44,230 |
| Median (hourly) | $19.89 |
| 10th percentile | $32,700 |
| 90th percentile | $60,190 |
| Employment | 2,750 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.