The median annual wage for Water and Wastewater Treatment Plant and System Operators in Delaware is $59,960 (May 2024 BLS OES). The mean (average) is $59,860.
Pay spans roughly $43,800 at the 10th percentile to $79,320 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $28.83 per hour. An estimated 250 people work as water and wastewater treatment plant and system operators in Delaware.
| Median (annual) | $59,960 |
| Mean (annual) | $59,860 |
| Median (hourly) | $28.83 |
| 10th percentile | $43,800 |
| 90th percentile | $79,320 |
| Employment | 250 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.