Operations Supervisor Water Wastewater Salary in Ontario (2025)
118 disclosed records, 2011–2025 · mostly Crown Agencies (95%)
At a Glance
2025
Disclosed
48
2025 Sunshine List
Median Salary
$112,289
-8.2% vs provincial median
Typical Range
$107,834–$128,182
25th–75th percentile
Top Salary
$257,934
Who was the highest-paid employee under the title "Operations Supervisor Water Wastewater" in Ontario in 2025?
The highest-paid record grouped under the title "Operations Supervisor Water Wastewater" on the 2025 Sunshine List was Darren Mahlman at Ontario Clean Water Agency, with a salary of $257,934; the median among the 48 listed under this title was $112,289.
Take-Home Pay
(After Tax) · 2025 estimate
Federal and Ontario income tax on the 2025 Operations Supervisor Water Wastewater median of $112,289 comes to about 21.8%, leaving roughly $82,313 a year — about $6,859 a month. That is about 8% below the 2025 median across the whole list, $122,262. 48 people were listed under this title in 2025. Half of those listed earned between $107,834 and $128,182. After pension contributions (probably PSPP or OPTrust in this sector), take-home is usually a further 7–10% lower.
- Estimated net pay
- ~$82,313
- Effective income-tax rate (excl. CPP/EI)
- ~21.8%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~26.7%
- Per month, after tax
- ~$6,859
Where does $112,289 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.
Median by Year
2005–2025
Where They Work
2025 · employers with 5+
| Employer | Median | Detail |
|---|---|---|
| Ontario Clean Water Agency | $112,589 | Pay here → |
Highest Paid
2025
| # | Name | Salary | Total |
|---|---|---|---|
| 1 | Darren MahlmanOperations Supervisor, Water and Wastewater | $257,934 | $258,123 |
| 2 | Yves FredetteOperations Supervisor, Water and Wastewater | $143,029 | $143,222 |
| 3 | Remi BoucherOperations Supervisor, Water and Wastewater | $137,620 | $137,801 |
| 4 | Michel PlourdeOperations Supervisor, Water and Wastewater | $135,582 | $135,774 |
| 5 | Filipe JorgeOperations Supervisor, Water and Wastewater | $135,546 | $135,739 |
| 6 | Kevin RegierOperations Supervisor, Water and Wastewater | $135,341 | $135,518 |
| 7 | Adam McclureOperations Supervisor, Water and Wastewater | $134,431 | $134,609 |
| 8 | Patrick LucasOperations Supervisor, Water and Wastewater | $132,557 | $133,479 |
| 9 | Steven GerlOperations Supervisor, Water and Wastewater | $132,483 | $132,652 |
| 10 | Jonathan DaleyOperations Supervisor, Water and Wastewater | $129,534 | $129,726 |
By Year
Related Positions
About these figures
Source: Ontario’s Public Sector Salary Disclosure (the “Sunshine List”), which names every public-sector employee paid $100,000 or more in a calendar year. Figures are disclosed salaries, not market compensation: anyone in this position earning under $100,000 does not appear, so medians here sit above the true median for the job.
Medians and percentiles use salary paid (benefits excluded), computed over records whose filed job title was normalized into this position. Titles are as each employer filed them; spellings, word order and bilingual forms are merged. Employers and years with fewer than five people show counts only.
Data through 2025, the most recent Sunshine List disclosed.