The median annual wage for Petroleum Pump System Operators, Refinery Operators, and Gaugers in California is $107,270 (May 2024 BLS OES). The mean (average) is $102,960.
Pay spans roughly $61,430 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 $51.57 per hour. An estimated 3,640 people work as petroleum pump system operators, refinery operators, and gaugers in California.
| Median (annual) | $107,270 |
| Mean (annual) | $102,960 |
| Median (hourly) | $51.57 |
| 10th percentile | $61,430 |
| 90th percentile | $124,040 |
| Employment | 3,640 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.