Water Treatment Operator Salary in Ontario (2025)
63 disclosed records, 2018–2025 · mostly Municipalities & Services (97%)
At a Glance
2025
Disclosed
20
2025 Sunshine List
Median Salary
$110,466
-9.6% vs provincial median
Typical Range
$105,386–$113,808
25th–75th percentile
Top Salary
$124,135
Who was the highest-paid employee under the title "Water Treatment Operator" in Ontario in 2025?
The highest-paid record grouped under the title "Water Treatment Operator" on the 2025 Sunshine List was Loan Leishman at Regional Municipality Of Halton, with a salary of $124,135; the median among the 20 listed under this title was $110,466.
Take-Home Pay
(After Tax) · 2025 estimate
A Water Treatment Operator paid the 2025 median of $110,466 would take home roughly $81,108 after income tax, CPP and EI — about $6,759 a month, an all-in deduction rate of about 26.6%. That is about 10% below the 2025 median across the whole list, $122,262. 20 people were listed under this title in 2025. Half of those listed earned between $105,386 and $113,808. After pension contributions (probably OMERS in this sector), take-home is usually a further 7–10% lower.
- Estimated net pay
- ~$81,108
- Effective income-tax rate (excl. CPP/EI)
- ~21.6%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~26.6%
- Per month, after tax
- ~$6,759
Where does $110,466 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 |
|---|---|---|
| Regional Municipality of Halton | $109,595 | Pay here → |
Highest Paid
2025
| # | Name | Salary | Total |
|---|---|---|---|
| 1 | Loan LeishmanWater Treatment Operator | $124,135 | $124,574 |
| 2 | Neil McmillanWater Treatment Operator | $116,854 | $117,947 |
| 3 | David RomanoWater Treatment Operator | $115,057 | $115,495 |
| 4 | Meghdeepsinh ChauhanWater Treatment Operator | $114,072 | $115,979 |
| 5 | Matthew GrzebieluchaWater Treatment Operator | $113,837 | $114,273 |
| 6 | Kenneth RyderWater Treatment Operator | $113,808 | $114,193 |
| 7 | Scott ZugayWater Treatment Operator | $113,367 | $113,806 |
| 8 | Rupenkumar MistryWater Treatment Operator | $113,142 | $113,581 |
| 9 | Richard ProulxWater Treatment Operator | $112,746 | $113,185 |
| 10 | Sergio AdanWater Treatment Operator | $111,336 | $111,775 |
By Year
Related Positions
- Constable5,795
- Firefighter5,399
- Police Constable4,778
- Operator3,992
- Primary Care Paramedic2,883
- Sergeant1,600
- Captain1,385
- Plainclothes Police Constable1,286
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.