The median annual wage for Water and Wastewater Treatment Plant and System Operators in Montana is $59,960 (May 2024 BLS OES). The mean (average) is $60,310.
Pay spans roughly $43,870 at the 10th percentile to $78,860 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $28.83 per hour. An estimated 690 people work as water and wastewater treatment plant and system operators in Montana.
| Median (annual) | $59,960 |
| Mean (annual) | $60,310 |
| Median (hourly) | $28.83 |
| 10th percentile | $43,870 |
| 90th percentile | $78,860 |
| Employment | 690 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.