The median annual wage for Water and Wastewater Treatment Plant and System Operators in Napa, CA is $99,450 (May 2024 BLS OES). The mean (average) is $96,180.
Pay spans roughly $57,390 at the 10th percentile to $124,040 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $47.81 per hour. An estimated 90 people work as water and wastewater treatment plant and system operators in Napa, CA.
| Median (annual) | $99,450 |
| Mean (annual) | $96,180 |
| Median (hourly) | $47.81 |
| 10th percentile | $57,390 |
| 90th percentile | $124,040 |
| Employment | 90 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.