Sewage Disposal Plant Operating federal salary series 5408
Full-time federal employees in the Sewage Disposal Plant Operating series earned a median of $81,623 in
annualized adjusted basic pay in September 2026, 26% below the all-federal median of $109,641.
The middle half earned between $67,170 and $94,698.
Median pay
$81,623
full-time, September 2026
Middle 50%
$67,170–$94,698
25th–75th percentile
Employees
237
in this series, all schedules
Change in median
+5%
vs. September 2025
Pay distribution, full-time employees with published pay, September 2026
Federal pay depends mostly on grade and step, plus a locality adjustment for where the job is located; see the GS pay scale explainer.
OPM withheld pay for 84% of employees in this series. The figures here describe only employees with published pay; withholding is concentrated in certain agencies (see data coverage).
Change since September 2025
The median moved +5.0% from $77,741 in September 2025 to $81,623 in September 2026. Headcount went from 246 to 237 (−3.7%). A change in the median reflects both pay adjustments and who joined or left the workforce, so it is not the same as a pay raise.
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