OWWA CERTIFIED TESTERS • RED SEAL 306A PLUMBERS • MUNICIPAL BYLAW COMPLIANT
Certified Backflow Prevention Testing, Repair & Tagging
Annual device testing, cross-connection surveys, municipal report filing, and licensed mechanical repairs for commercial, industrial, and multi-residential facilities across Guelph and the Waterloo Region.
Complete Cross-Connection Control & Backflow Services.
Complete Cross-Connection Control & Backflow Services.Keeping commercial facilities compliant with municipal water bylaws and protected against backpressure and backsiphonage.
Annual Device Testing & Tagging
Testing of Reduced Pressure Principle (RP), Double Check Valve Assemblies (DCVA), and Pressure Vacuum Breakers (PVB) using calibrated differential pressure gauges, followed by official on-site tag affixing
Direct Municipal Report Submission
We complete all compliance documentation and submit the official test reports directly to the City of Guelph Water Services, the Region of Waterloo, or your local municipal bylaw office.
Device Rebuilds & Emergency Repairs
Failed test resolution including internal checks, disc replacement, spring kit overhauls, relief valve rebuilds, and shut-off valve servicing using genuine OEM parts.
Cross-Connection Control Surveys
Comprehensive facility audits to identify actual and potential cross-connections between potable water lines and hazardous substances, as required by municipal compliance notices.
New Installations & Retrofits
Full installation of new backflow preventers on incoming domestic mains, dedicated fire service lines, boiler feed loops, and commercial irrigation tie-ins by licensed Red Seal plumbers.
Multi-Device Property Maintenance
Consolidated testing programs and scheduled compliance reminders for industrial plants, plazas, condominiums, and multi-tenant facilities managing multiple backflow devices.
MUNICIPAL COMPLIANCE & WATER SAFETY
MUNICIPAL COMPLIANCE & WATER SAFETY
Commercial and industrial properties in Southwestern Ontario are mandated to have their cross-connection devices inspected annually under municipal bylaws, including City of Guelph Water Bylaw (2008)-18660 and Region of Waterloo By-law 13-057.
Failure to test devices within the municipal notice window risks compliance fines or water service disruption. As OWWA-certified specialists and licensed 306A plumbers, Stillson Mechanical tests your devices, executes any necessary internal repairs on the spot, and submits the completed reports directly to your local municipal water authority to close out your notice immediately.
Assemblies & Manufacturers We Inspect & Rebuild
Watts • Conbraco (Apollo) • Zurn Wilkins • Ames Fire & Waterworks • Febco • Cla-Val
24/7 COMMERCIAL DISPATCH
Request Immediate Service or a Mechanical Estimate
Whether you are facing an urgent cooling shutdown or planning a multi-unit mechanical upgrade, our dual-trade technicians respond promptly across Guelph and the Waterloo Region.