The median annual wage for Water and Wastewater Treatment Plant and System Operators in Spokane-Spokane Valley, WA is $77,750 (May 2024 BLS OES). The mean (average) is $72,510.
Pay spans roughly $51,180 at the 10th percentile to $92,520 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $37.38 per hour. An estimated 130 people work as water and wastewater treatment plant and system operators in Spokane-Spokane Valley, WA.
| Median (annual) | $77,750 |
| Mean (annual) | $72,510 |
| Median (hourly) | $37.38 |
| 10th percentile | $51,180 |
| 90th percentile | $92,520 |
| Employment | 130 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.