STP Operator; Unionized
Job in
Bowmanville, Oshawa, Ontario, Canada
Listing for:
Aecon
Full Time
position
Listed on 2026-09-01
Job specializations:
-
Energy/Power Generation
Waste Management
Salary/Wage Range or Industry Benchmark: 51.44 - 52.8 CAD Hourly
CAD
51.44
52.80
HOUR
Job Description & How to Apply Below
Position: STP Operator (Unionized)
Location: BowmanvilleWhat is the Opportunity?
As part of an alliance agreement, Aecon has been awarded a contract in an Aecon-led partnership with Kiewit Nuclear Canada by Ontario Power Generation (OPG) for the execution phase on the Darlington New Nuclear Project (DNNP) in Clarington, Ontario. In 2025, Aecon began the Construction of the Unit 1 Small Modular Reactor at the Darlington site.
Job Summary
The STP Operator is responsible for operating and monitoring the Separation & Treatment Plant to efficiently separate solids, oil, and contaminants from wastewater generated during construction and tunnelling activities. The role ensures safe operation, environmental compliance, and continuous plant availability to support site operations.
Key Responsibilities – Plant Operation
Operate and monitor separation and treatment units including settling tanks, separators, hydrocyclones, clarifiers, oil-water separators, and chemical dosing systems.Control pumps, valves, mixers, and conveyors to maintain steady plant throughput.Adjust flow rates, pressures, and dosing to optimize separation efficiency.Monitoring & Quality Control
Monitor inlet and outlet water quality (pH, turbidity, suspended solids, oil content).Take routine samples and maintain operational logs.Ensure treated water meets discharge or reuse requirements.Solids & Waste Handling
Manage sludge, separated solids, and oil waste.Operate dewatering units and monitor cake quality.Coordinate waste disposal as per environmental regulations.Health, Safety & Environment (HSE)
Follow all site safety and environmental procedures.Handle chemicals safely using proper PPE.Prevent spills, overflows, and environmental incidents.Reporting & Coordination
Report daily operations, downtime, and issues to the Supervisor.Coordinate with TBM, slurry, dewatering, and site teams.Support inspections by the client or authorities.Reason for vacancy:
New
Pay Rage:
Per the HCAT Collective Agreement:
Effective May 1, 2025: $51,44/hr
Effective May 1, 2026: $52.80/hr
Effective May 1, 2026 $ 54.39/hr
We strongly encourage applicants who identify as Indigenous to apply to work with us on the Darlington New Nuclear Project. At Aecon, Indigenous is an umbrella term for First Nations (status and non-status), Metis and Inuit.
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