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What does a Water and Wastewater Treatment Plant and System Operators salary really buy you in Delaware?
Delaware is 2.0% cheaper than the US averageData: BLS OEWS 2025 + BEA Regional Price Parities 2022 • Updated 2026-05-19
Delaware's Regional Price Parity (RPP) is 98.0, meaning prices are 2.0% lower the national average. A Water and Wastewater Treatment Plant and System Operators earning $64,940 in Delaware has the equivalent purchasing power of $66,265 in an average-cost US state.
Every dollar goes further in low-cost states. Here is how each salary percentile compares after adjusting for Delaware's cost of living.
| Percentile | Nominal Salary | COL-Adjusted | Difference |
|---|---|---|---|
| 10th Percentile (P10) | $48,160 | $49,142 | +$982 |
| 25th Percentile (P25) | $54,960 | $56,081 | +$1,121 |
| Median (P50) | $64,940 | $66,265 | +$1,325 |
| 75th Percentile (P75) | $76,240 | $77,795 | +$1,555 |
| 90th Percentile (P90) | $84,360 | $86,081 | +$1,721 |
Delaware's cost of living is close to the national average, so $64,940 keeps most of its value at $66,265 in real terms. Location choice here is more about career opportunities than cost arbitrage.
With an RPP of 98.0, Delaware is within a few percent of the national cost-of-living baseline. Salary adjustment for Water and Wastewater Treatment Plant and System Operators is therefore minor — what you earn is close to what you'd keep in real purchasing power.
After adjusting for Delaware's cost of living, $64,940 nominal nets out to $66,265 in real purchasing power — a small 2.0% gain. The state's cost profile is close enough to average that COL alone shouldn't drive location decisions for this Water and Wastewater Treatment Plant and System Operators.
Delaware sits at #14 of 50 states for Water and Wastewater Treatment Plant and System Operators COL-adjusted salary — comfortably above the national midpoint.
Where does Water and Wastewater Treatment Plant and System Operators salary stretch the furthest? Top 10 states ranked by COL-adjusted median salary.
Delaware ranks #14 out of 50 states for Water and Wastewater Treatment Plant and System Operators after cost-of-living adjustment.
How much do you actually take home? See Water and Wastewater Treatment Plant and System Operators take-home pay in Delaware after taxes →
A Water and Wastewater Treatment Plant and System Operators in Delaware earns a median salary of $64,940 per year. After adjusting for Delaware's cost of living (RPP=98.0), the real purchasing power is $66,265 — a +2.0% difference.
Delaware's cost of living is 2.0% lower than the national average according to the BEA Regional Price Parities (2022). The RPP index for Delaware is 98.0 (US average = 100).
Regional Price Parities (RPPs) are price indexes published by the U.S. Bureau of Economic Analysis (BEA) that measure differences in price levels across states. They are expressed as a percentage of the national average (US = 100). Higher RPP means higher cost of living.
The adjusted salary is calculated as: Nominal Salary x (100 / RPP). For a Water and Wastewater Treatment Plant and System Operators in Delaware: $64,940 x (100 / 98.0) = $66,265. This represents what the salary would be worth in a state with average living costs.
From a purchasing power perspective, yes. A Water and Wastewater Treatment Plant and System Operators in Delaware enjoys 2.0% more buying power than the nominal salary suggests, because living costs are below the national average. However, other factors like job availability, career growth, and quality of life also matter.
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