The median annual wage for Water and Wastewater Treatment Plant and System Operators in Louisville/Jefferson County, KY-IN is $55,660 (May 2024 BLS OES). The mean (average) is $57,520.
Pay spans roughly $37,710 at the 10th percentile to $77,460 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $26.76 per hour. An estimated 550 people work as water and wastewater treatment plant and system operators in Louisville/Jefferson County, KY-IN.
| Median (annual) | $55,660 |
| Mean (annual) | $57,520 |
| Median (hourly) | $26.76 |
| 10th percentile | $37,710 |
| 90th percentile | $77,460 |
| Employment | 550 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.