The median annual wage for Water and Wastewater Treatment Plant and System Operators in Hattiesburg, MS is $42,660 (May 2024 BLS OES). The mean (average) is $45,700.
Pay spans roughly $35,720 at the 10th percentile to $62,470 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $20.51 per hour. An estimated 30 people work as water and wastewater treatment plant and system operators in Hattiesburg, MS.
| Median (annual) | $42,660 |
| Mean (annual) | $45,700 |
| Median (hourly) | $20.51 |
| 10th percentile | $35,720 |
| 90th percentile | $62,470 |
| Employment | 30 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.