The median annual wage for Water and Wastewater Treatment Plant and System Operators in Massachusetts is $65,620 (May 2024 BLS OES). The mean (average) is $67,650.
Pay spans roughly $49,660 at the 10th percentile to $82,150 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $31.55 per hour. An estimated 2,480 people work as water and wastewater treatment plant and system operators in Massachusetts.
| Median (annual) | $65,620 |
| Mean (annual) | $67,650 |
| Median (hourly) | $31.55 |
| 10th percentile | $49,660 |
| 90th percentile | $82,150 |
| Employment | 2,480 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.