The median annual wage for Water and Wastewater Treatment Plant and System Operators in Columbia, SC is $51,630 (May 2024 BLS OES). The mean (average) is $51,460.
Pay spans roughly $38,160 at the 10th percentile to $64,020 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $24.82 per hour. An estimated 390 people work as water and wastewater treatment plant and system operators in Columbia, SC.
| Median (annual) | $51,630 |
| Mean (annual) | $51,460 |
| Median (hourly) | $24.82 |
| 10th percentile | $38,160 |
| 90th percentile | $64,020 |
| Employment | 390 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.