Irrigation city route

Longmont irrigation backflow testing

Longmont has especially strong irrigation content because DCVAs are no longer approved long term on irrigation lines and failed units must move toward RP protection.

City: Longmont Utility: City of Longmont Backflow Prevention and Cross-Connection Control Cadence: Annually with utility due dates between April and September Last verified: 2026-06-29
Local answer

What to check for Longmont

Longmont has especially strong irrigation content because DCVAs are no longer approved long term on irrigation lines and failed units must move toward RP protection.

  • Due basis: Longmont requires annual testing by certified testers, says new and replacement assemblies must be tested after installation, and publishes a notice-and-enforcement sequence that starts 45 days before the due date and can escalate to civil penalties and water suspension.
  • Who is affected: Longmont customers with backflow assemblies, especially non-single-family properties, irrigation services, and homes with higher-hazard conditions like fire suppression or boilers.
  • Program phone: 303-651-8416
Local signals

Signals that matter before you act

  • Irrigation systems are treated as high-hazard cross-connections.
  • A failed irrigation DCVA must be replaced with an RP within 60 days or repaired on a two-year replacement timeline.
  • The city now routes submission through SwiftComply.
Workflow

Longmont workflow order

  1. Confirm whether the irrigation line still has a DCVA.
  2. If it fails, choose repair with timeline or full RP replacement.
  3. Keep the city and SwiftComply record current while the upgrade is completed.