Connecticut requirements
Source verifiedReviewed Jul 22, 2026
Norwich Public Utilities backflow testing requirements
Norwich Public Utilities construction standards adopt Connecticut DPH cross-connection guidance and require approved testable backflow protection for commercial, industrial, fire-protection, irrigation, and other identified hazards.
What testers should know
NPU standards require approval before installation. Contact Norwich Public Utilities to confirm inspection, testing, form, fee, and submission requirements for an existing property.
Tester requirements: Use a properly certified tester only after confirming whether NPU will perform or accept the property-specific test.
Important: Utility instructions can change and property-specific requirements may differ. Confirm the accepted form and delivery method before relying on this guide.