W.A. Stephenson Mechanical Contractors Limited — construction activity

66public tenders 66bid registrations 0permit records 43bids submitted 6low bids 2026-10-05last detected activity

Where and what

Ontario

Currently bidding (3 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 Oct 09
2026-229T - CLARKSON WASTEWATER TREATMENT PLANT PRIMARY CLARIFIER NO. 3 TRAVELLING BRIDGE REPLACEMENT, PROJECT 14-2930 Region of Peel	closes Oct 16
W-3526A-A-26 - Request for Prequalification for Upgrades and Equipment Replacement at Three (3) Wastewater Locations: Belair Estates, Chancery Lane and Sixteen Mile Creek, in the Town of Oakville. Category 1: General Contractor, Category 2: Electrical Subcontractor and Category 3: Temporary Bypass Subcontractor Halton Region	closes Oct 22

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

Recent activity

2026-09-16 bid Bid $319,800 — LOW BID on T2026-202 - Nith River Wastewater Pumping Station Upgrades
2026-09-14 tender W-3526A-A-26 - Request for Prequalification for Upgrades and Equipment Replacement at Three (3) Wastewater Locations: Belair Estates, Chancery Lane and Sixteen Mile Creek, in the Town of Oakville. Category 1: General Contractor, Category 2: Electrical Subcontractor and Category 3: Temporary Bypass Subcontractor
Halton Region
2026-09-12 bid Bid $3,168,000 on T2026-211 - New Hamburg WWTP - Aeration Diffuser & Header Replacement
2026-09-03 tender 2026-229T - CLARKSON WASTEWATER TREATMENT PLANT PRIMARY CLARIFIER NO. 3 TRAVELLING BRIDGE REPLACEMENT, PROJECT 14-2930
Region of Peel
2026-08-22 tender T2026-202 - Nith River Wastewater Pumping Station Upgrades
Region of Waterloo
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