The median annual wage for Water and Wastewater Treatment Plant and System Operators in Modesto, CA is $82,790 (May 2024 BLS OES). The mean (average) is $79,920.
Pay spans roughly $49,750 at the 10th percentile to $97,630 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $39.80 per hour. An estimated 220 people work as water and wastewater treatment plant and system operators in Modesto, CA.
| Median (annual) | $82,790 |
| Mean (annual) | $79,920 |
| Median (hourly) | $39.80 |
| 10th percentile | $49,750 |
| 90th percentile | $97,630 |
| Employment | 220 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.