Last updated: 2025 BLS data · Page refreshed:
How much does a Water and Wastewater Treatment Plant and System Operators actually take home in Hawaii?
Progressive (up to 11.0%) — 24.3% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Water and Wastewater Treatment Plant and System Operators earning $65,560 in Hawaii (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $65,560 | — |
| Federal Income Tax | -$6,264 | 9.6% |
| Hawaii State Income Tax | -$4,662 | 7.1% |
| Social Security (OASDI) | -$4,064 | 6.2% |
| Medicare | -$950 | 1.5% |
| Total Taxes | -$15,941 | 24.3% |
| Take-Home Pay | $49,618 | 75.7% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Water and Wastewater Treatment Plant and System Operators in Hawaii.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $46,900 | -$10,358 | $36,541 | 22.1% |
| 25th Percentile (P25) | $55,470 | -$12,745 | $42,724 | 23.0% |
| Median (P50) | $65,560 | -$15,941 | $49,618 | 24.3% |
| 75th Percentile (P75) | $78,320 | -$20,777 | $57,542 | 26.5% |
| 90th Percentile (P90) | $82,680 | -$22,430 | $60,249 | 27.1% |
After federal income tax ($6,264), state tax ($4,662), and FICA ($5,015), a Water and Wastewater Treatment Plant and System Operators in Hawaii takes home $49,618 per year — or $4,134 per month. The effective tax rate of 24.3% is relatively low compared to the national range.
With an effective total rate of 24.3%, a Water and Wastewater Treatment Plant and System Operators in Hawaii keeps $49,618 of $65,560 gross — roughly typical for U.S. middle-income earners once federal, FICA and state taxes are combined.
Hawaii uses a progressive state income tax, so brackets escalate as wages rise. For this Water and Wastewater Treatment Plant and System Operators salary the state tax works out to $4,662 (7.1% effective) — on top of federal and FICA.
Federal tax on this Water and Wastewater Treatment Plant and System Operators salary is $6,264 (39%), but combined state ($4,662, 29%) + FICA ($5,015, 31%) make up the other 61% of the bill.
Moving this same Water and Wastewater Treatment Plant and System Operators salary to a zero-state-tax state would yield around $54,280 net — a gain of $4,662 (9.4%) per year versus Hawaii.
Hawaii ranks #21 of 50 states for Water and Wastewater Treatment Plant and System Operators after-tax pay — comfortably in the upper half.
Translated into paycheck cadences, $49,618 net/year works out to $4,135/month or $1,908/bi-weekly for this Water and Wastewater Treatment Plant and System Operators in Hawaii — the numbers that actually hit a checking account after every deduction.
Where does a Water and Wastewater Treatment Plant and System Operators keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Hawaii ranks #21 out of 50 states for Water and Wastewater Treatment Plant and System Operators after-tax take-home pay.
A Water and Wastewater Treatment Plant and System Operators in Hawaii earning a median salary of $65,560 will take home approximately $49,618 per year after federal income tax ($6,264), state income tax ($4,662), and FICA ($5,015). That is $4,134 per month or $1,908 per bi-weekly paycheck.
The effective total tax rate for a Water and Wastewater Treatment Plant and System Operators in Hawaii is 24.3%, broken down as: federal income tax 9.6%, Hawaii state tax 7.1%, and FICA (Social Security + Medicare) 7.6%. This assumes a single filer with the standard deduction for 2024.
Hawaii has a progressive (up to 11.0%). On a Water and Wastewater Treatment Plant and System Operators's median salary of $65,560, the state income tax amounts to $4,662 per year, which is an effective state rate of 7.1%.
After all taxes, a Water and Wastewater Treatment Plant and System Operators in Hawaii takes home approximately $4,134 per month, or about $23.85 per hour (based on a standard 2,080-hour work year). These figures assume a single filer, standard deduction, and no additional pre-tax deductions.
We start with the 2025 BLS median salary of $65,560 for Water and Wastewater Treatment Plant and System Operators in Hawaii, then subtract: federal income tax using 2024 IRS brackets ($14,600 standard deduction), Hawaii state income tax (progressive (up to 11.0%)), Social Security (6.2% up to $168,600), and Medicare (1.45%). The result — $49,618/yr — does not include local taxes, pre-tax deductions (401k, HSA), or tax credits.
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This estimate assumes a single filer using the 2024 standard deduction ($14,600), with W-2 employment income only. It does not account for: itemized deductions, tax credits (e.g. earned income credit, child tax credit), local/city taxes, pre-tax contributions (401k, HSA, FSA), self-employment tax, or additional income sources. Actual take-home pay may differ. Consult a tax professional for personalized advice.
Our Methodology · Data Sources · Salary: BLS OEWS · Tax: IRS + State DOR