Water Treatment Operator salary in Ontario
20 people with this title were paid $100,000 or more in 2025. Half earned between $107,911 and $113,808.
Median salary by year
Among people with this title on the list.
Show as a table
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| 2020 | $103,793 |
| 2021 | |
| 2022 | $108,071 |
| 2023 | $103,940 |
| 2024 | $106,367 |
| 2025 | $110,466 |
Pay bands
People with this title by salary, 2025.
Employers with the most
Highest paid in 2025
Compare Water Treatment Operator
Questions and answers
What is the median salary for a Water Treatment Operator in Ontario’s public sector?
$110,466 among the 20 people with this title on the 2025 list. Only people paid $100,000 or more are listed, so this is not the median for everyone in the job.
How much do most people with the title Water Treatment Operator on the list earn?
Half were paid between $107,911 and $113,808 in 2025; the highest salary was $124,135.
Which employer has the most people with the title Water Treatment Operator?
Regional Municipality Of Halton, with 17 on the 2025 list.
How many people with the title Water Treatment Operator are on the list?
20 in 2025, up from 5 in 2020.
What share of people with the title Water Treatment Operator are paid $150,000 or more?
0% of those on the 2025 list (0 people), and 0% $200,000 or more (0).
How does Water Treatment Operator pay compare with the whole list?
Its median, $110,466, is 9.6% below the median of everyone on the 2025 list ($122,262).
How much does a Water Treatment Operator make at Regional Municipality Of Halton?
The median salary of the 17 people with this title at Regional Municipality Of Halton was $109,595 in 2025.
Has Water Treatment Operator pay gone up?
The median rose 3.9% from 2024 ($106,367) to 2025. In 2020 it was $103,793.
What does “salary paid” include?
What the employer paid in the calendar year, so it can include overtime, retroactive pay, vacation payouts, severance or a partial year. Taxable benefits are listed separately. How the lists work
Why is someone not on the list?
Only people paid $100,000 or more in the year are listed, and only by the public employers the Public Sector Salary Disclosure Act, 1996 covers. Someone paid less that year, or working elsewhere, does not appear.