W.A. Stephenson Mechanical Contractors Limited — construction activity

63public tenders 63bid registrations 0permit records 41bids submitted 5low bids 2026-08-21last detected activity

Where and what

Ontario

Currently bidding (2 open tenders)

RFTC-3229-25 - Various Short Term Upgrades at the Schomberg Water Resource Recovery Facility 5 Dillane Drive in the Township of King York Region	closes Sep 09
T2026-211 - New Hamburg WWTP - Aeration Diffuser & Header Replacement Region of Waterloo	closes Sep 09

Registered as a plan taker on these open bids — the public pre-close signal of intent to submit.

Recent activity

2026-08-21 bid Bid submitted on RFPQ-1053-2026 - Prequalification of general contractors for Large Greenfield Water Facility Construction Projects in the Region of Durham
2026-08-21 bid Bid submitted on RFPQ-1068-2026 - Prequalification of General Contractors for Large Greenfield Sanitary Sewage Pumping Station Construction Projects in the Region of Durham
2026-08-20 tender RFT-25-006 - Owen Sound Wastewater Treatment Plant Fine Screens
City of Owen Sound
2026-08-20 tender 2025-22-T-OPS - Invitation to Tender for Craigleith Main Lift Station Upgrades
Town of The Blue Mountains
2026-08-20 tender 2025-04-PQ-OPS - REQUEST FOR PREQUALIFICATION FOR GENERAL CONTRACTORS, MECHANICAL SUBCONTRACTORS, AND ELECTRICAL SUBCONTRACTORS FOR CONSTRUCTION OF THE CRAIGLEITH AND MILL STREET SPS UPGRADES
Town of The Blue Mountains
2026-08-20 tender 2024-02-T-OPS - Supply & Installation of Replacement Valves and Actuators at Craigleith Wastewater Treatment Plant
Town of The Blue Mountains
2026-08-20 tender BWG25-360-Q - Bradford Water Pollution Control Plant Odour Control / Aeration Systems Upgrades and New Tertiary Membrane Facility Project
Town of Bradford West Gwillimbury
2026-08-20 tender 2024-13-PW - Elmvale WWTP Upgrades
Township of Springwater
2026-08-20 tender FIN2024-036PQ - Anne St. Booster Pump Station Mechanical Subcontractor Prequalification
City of Barrie
2026-08-20 tender RFT-2024-125 - GUDI Well Filtration Upgrades
Town of Orangeville
2026-08-20 tender RFPQ-2025-204 - Dudgeon Reservoir Water Equipment Upgrades
Town of Orangeville
2026-08-20 tender 2024-129 - Wastewater Treatment Plant - Digester P5 Rehabilitation, S3 Cleanout and Process Boiler Replacement
City of Brantford
2026-08-20 tender 2024-58 - Water Treatment Plant Chlorination and Ultraviolet Disinfection Upgrades
City of Brantford
2026-08-20 tender 2024-T-111 - Port Dalhousie Wastewater Treatment Plant Waste Gas Burner Upgrade
Niagara Region
2026-08-20 tender PQ2025-24 - Request for Prequalification as General Contractor for the Hespeler Wastewater Treatment Plant Upgrades
Region of Waterloo