The median annual wage for Water and Wastewater Treatment Plant and System Operators in Indiana is $55,170 (May 2024 BLS OES). The mean (average) is $56,030.
Pay spans roughly $40,940 at the 10th percentile to $73,170 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $26.52 per hour. An estimated 3,300 people work as water and wastewater treatment plant and system operators in Indiana.
| Median (annual) | $55,170 |
| Mean (annual) | $56,030 |
| Median (hourly) | $26.52 |
| 10th percentile | $40,940 |
| 90th percentile | $73,170 |
| Employment | 3,300 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.