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Tip #172

Replace windows with double-pane, low-e windows.

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Fort Collins Utilities is an equal opportunity residential and commercial utility service provider. We do not discriminate in the terms, conditions or provision of services based on race, color, religion, sex, disability, familial status or national origin.


Fort Collins Utilities es una empresa proveedora de servicios públicos residenciales y comerciales con igualdad de oportunidad. No discriminamos en los términos, las condiciones o la provisión de servicios en base a raza, color, religión, sexo, discapacidad, estatus familiar o nacionalidad de origen.

Approved Backflow Preventers


Atmospheric Vacuum Breaker (AVB)

  • An AVB must be installed on each irrigation zone. Control valves (on/off valves) are not allowed downstream of (after) an AVB.
  • Each AVB must be installed a minimum of 6" above the highest point of water in the zone it serves.
  • No chemical or fertilizer may be introduced into a sprinkler system equipped with AVBs.
  • No pumps or back pressure sources are permitted on downstream side of (after) an AVB.

Pressure Vacuum Breaker Assembly (PVB)*

  • Only one PVB is required to serve the whole system. Control valves may be located downstream of (after) the PVB.
  • PVBs must be installed a minimum of 12" above the highest point of water they serve.
  • No chemical or fertilizer may be introduced into an irrigation system equipped with PVBs.
  • No pumps or back pressure sources are permitted on downstream side of (after) a PVB.

*Must test every three years or after installation, repair or replacement.


Reduced Pressure Backflow Assembly (RPBA)*

  • Only one RPBA is required to serve the whole system; control valves can be located downstream of (after) the RPBA.
  • RPBAs must be installed a minimum of 12" above ground level.
  • In a RPBA-equipped system, fertilizer and other agricultural chemicals may be introduced downstream of (after) the RPBA.
  • List of certified testers.

*Must test every three years or after installation, repair or replacement.