York Region By-law 2021-44 Compliance Overview

Properties in Vaughan, Markham, Richmond Hill, Newmarket, and Aurora are subject to York Region By-law 2021-44. Commercial, industrial, institutional, and Part 3 multi-residential property owners are legally required to install, maintain, and test premise isolation backflow assemblies (DCVA / RPZ) annually.

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

York Compliance Quick Facts

Annual Testing: Required
Survey Cycle: Every 5 Years
Filing Portal: Direct Digital Filing
Bylaw Standard: CSA B64.10
Tester Status: Registered OWWA

Registered OWWA Tester performing gauge test in Vaughan facility

Complete Backflow Services in Vaughan & Markham

🔍

Annual Field Testing

Field differential pressure testing of DCVA, RPZ, and PVB assemblies with on-site physical device tagging.

📋

5-Year Cross-Connection Surveys

Facility-wide audits for industrial parks, tech campuses, and commercial plazas across Vaughan & Markham.

🔧

Same-Day Repairs & Rebuilds

Fast rebuilds for failed check valves and leaking relief ports using OEM Watts and Wilkins repair kits.

Need Registered Vaughan or Markham Backflow Testing?

Serving Vaughan, Markham, Richmond Hill, Woodbridge, Thornhill, Unionville, and Stouffville.

📋 Schedule Your York Region Test Now