Mark Helsten
Upper Thames River Conservation Authority/Senior Water Resources Engineer
2025 Salary
$120,715Total compensation $121,280, including $565 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
#8Upper Thames River Conservation Authority
Years on List
42022–2025
Peak Salary
$120,7152025
Full 2025 roster at Upper Thames River Conservation Authority →·See where $120,715 ranks →
Total Compensation History
Full History
2022–2025
$103,950 in 2022 is worth about $112,888 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Senior Water Resources EngineerUpper Thames River Conservation Authority | $120,715 |
| 2024 | Senior Water Resources EngineerUpper Thames River Conservation Authority | $117,202 |
| 2023 | —Upper Thames River Conservation Authority | $114,076 |
| 2022 | Senior Water Resources EngineerUpper Thames River Conservation Authority | $103,950 |
Take-Home Pay
(After Tax) · 2025 estimate
Take-home on Mark Helsten's 2025 salary of $120,715 comes to roughly $87,296 once federal and Ontario income tax (about 23.1% effective) is deducted. On total compensation of $121,280, Mark Helsten ranked #8 of 17 disclosed at Upper Thames River Conservation Authority that year, where the median salary was $120,715. Members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less after pension contributions, which this estimate leaves out.
- Estimated net pay
- ~$87,296
- Effective income-tax rate (excl. CPP/EI)
- ~23.1%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~27.7%
Where does $120,715 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.