Mark Helsten was paid $121,279.83 in total compensation as Senior Water Resources Engineer at Upper Thames River Conservation Authority in 2025, 21% above Ontario's $100,000.00 Sunshine List threshold.
Mark Helsten has appeared on the Ontario Sunshine List 4 times since 2022, earning $458K in combined disclosed pay — an average of $114,562.00 a year, up 16% over that span.
That is 5% below the average disclosed pay of $127,373.75 across 17 listed Upper Thames River Conservation Authority employees.
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4 years on the list
Annual total compensation (CAD) — hover to inspect.
The career in numbers
Totals, averages, and the biggest moves — all total compensation.
A career, year by year.
How Mark Helsten's total compensation has moved across 4 years on the Ontario Sunshine List.
Year-by-year history
4 years on the Sunshine List.
| Year | Total Compensation | Change |
|---|---|---|
2025Latest★ Best | $121,279.83 | ▲ 3.0% |
2024 | $117,756.76 | ▲ 2.7% |
2023 | $114,613.00 | ▲ 9.6% |
2022First | $104,598.15 | — |
| 4 years total | $458K total | $114,562.00 avg |
The record
Source data and how to request a correction.
Employee details
- Position
- Senior Water Resources Engineer
- Sector
- —
- Province
- Ontario
- First appeared
- 2022
- Latest disclosure
- 2025
- Years on list
- 4
Data source
Salary data is published annually by the Ontario government under the Public Sector Salary Disclosure Act. Only employees earning $100,000+ are disclosed.
Name removal
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