David Irwin
Halton Region Conservation Authority/Water Resources Engineer
2025 Salary
$122,143Total compensation $122,492, including $349 in taxable benefits.
Source: Ontario’s Public Sector Salary Disclosure — names paid $100,000 or more that year. How we build this · Report an error on this page
At a Glance
2025
Employer Rank
#25Halton Region Conservation Authority
Years on List
32022–2025
Peak Salary
$122,1432025
Full 2025 roster at Halton Region Conservation Authority →·See where $122,143 ranks →
Total Compensation History
Full History
2022–2025
$100,431 in 2022 is worth about $109,066 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Water Resources EngineerHalton Region Conservation Authority | $122,143 |
| 2024 | Water Resources EngineerHalton Region Conservation Authority | $110,505 |
| 2022 | Water Resources EngineerHalton Region Conservation Authority | $100,431 |
Take-Home Pay
(After Tax) · 2025 estimate
David Irwin was paid $122,143 in 2025; after income tax, CPP and EI that is roughly $88,105, an effective income-tax rate of about 23.4%. That is about 11% more than the $110,505 paid in 2024. For comparison, the median Water Resources Engineer on the 2025 list was paid $124,120; this salary is about 2% less. This estimate leaves out pension contributions; members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less.
- Estimated net pay
- ~$88,105
- Effective income-tax rate (excl. CPP/EI)
- ~23.4%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~27.9%
- vs. 2025 Water Resources Engineer median
- −2%
Where does $122,143 rank on the Sunshine List? →
Estimate only: 2025 federal and Ontario rates, basic personal amounts, Canada employment amount and CPP/EI credits; single, employment income only, salary treated as full-year income. Ignores pension contributions (OMERS, HOOPP, OTPP, OPTrust and similar plans lower actual take-home), union dues, RRSPs and benefits.