Ontario public pay
Nathan Siniowski
Supervisor Water Treatment Operations at City Of Guelph. On Ontario’s disclosure list 4 years between 2022 and 2025.
Salary disclosure2025
- Salary paid
- $132,740.74
- Taxable benefits
- $941.00
- Total disclosed
- $133,681.74
Source: Government of Ontario, Public Sector Salary Disclosure Act, 1996. © King’s Printer for Ontario.
Change from 2024: +$3,611 (+2.8%)4years on
the list
Change from 2024: +$3,611 (+2.8%)4years on
the list
Among 673 people at City Of Guelph in 2025
177th highest paid. Their median: $119,695.
$132,741$100,100$275,721
Paid more than 67% of everyone on the 2025 disclosure list, which only lists people paid $100,000 or more.
middle 80%middle halfmedianthis personspacing grows with pay (log scale)
Salary by year
$133K
Show as a table
| Year | Salary |
|---|---|
| 2022 | $117,678 |
| 2023 | $127,366 |
| 2024 | $129,130 |
| 2025 | $132,741 |
History
| Year | Employer and job | Salary | Benefits | Change |
|---|---|---|---|---|
| 2025 | City Of GuelphSupervisor Water Treatment Operations | $132,741 | $941 | +$3,611 |
| 2024 | City Of GuelphSupervisor Water Treatment Operations | $129,130 | $815 | +$1,764 |
| 2023 | City Of GuelphSupervisor, Water Treatment and Maintenance | $127,366 | $753 | +$9,688 |
| 2022 | City Of GuelphSupervisor Water Treatment and Maintenance | $117,678 | $794 |
Years are matched by name and employer. Salary paid can include overtime, retroactive pay and one-time payments. Figures are exactly as Ontario published them. How we match years · Report a mistake or ask for removal