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City of Toronto Backflow Prevention & Compliance

Registered Toronto Water testers providing annual field testing, 5-year Cross-Connection Surveys, and direct electronic report filing under Municipal Code Chapter 851.

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OWWA Certified CCCS Specialist NIST Calibrated Equipment

Toronto Municipal Code Chapter 851 Requirements

Toronto Water strictly enforces Municipal Code Chapter 851 (Water Supply) across all commercial, industrial, institutional, and Part 3 multi-residential properties in Toronto. Property owners are legally required to maintain, inspect, and test all backflow prevention devices annually.

All testing must be conducted by a registered tester holding active OWWA Cross-Connection Control Certification using NIST-calibrated differential pressure testing gauges.

Toronto Bylaw Penalties

  • Max Bylaw Fine: Up to $50,000 / day
  • Set Fines: $500 per infraction
  • Failed Device Repair Window: 30 Days
  • Ultimate Enforcement: Water Service Shut-Off
Registered Toronto Water Tester verifying backflow valve

Toronto Water Compliance Breakdown

Annual Device Testing

Mandatory 12-month field differential pressure testing for premise isolation DCVA and RPZ assemblies.

5-Year Facility Surveys

Complete Cross-Connection Control Surveys of all building water connections required every 5 years.

Direct Electronic Submission

Our technicians complete and file digital test certificates directly with Toronto Water Environmental Monitoring & Protection.

Need Registered Toronto Water Backflow Testing?

Registered testers serving Downtown Toronto, North York, Scarborough, Etobicoke, and East York.

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WhatsApp (416) 578-3471