The median annual wage for Water and Wastewater Treatment Plant and System Operators in Johnstown, PA is $50,950 (May 2024 BLS OES). The mean (average) is $56,370.
Pay spans roughly $44,140 at the 10th percentile to $71,080 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $24.49 per hour. An estimated 70 people work as water and wastewater treatment plant and system operators in Johnstown, PA.
| Median (annual) | $50,950 |
| Mean (annual) | $56,370 |
| Median (hourly) | $24.49 |
| 10th percentile | $44,140 |
| 90th percentile | $71,080 |
| Employment | 70 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.