ISO Rating

ISO Rating Public Protection Classification (PPC)

ISO concluded its review of the fire suppression features being provided for Flagstaff. The resulting community classification is Class 02/10.

If the classification is a single class, the classification applies to properties with a Needed Fire Flow of 3,500 gpm or less in the community. If the classification is a split class (e.g., 6/XX):

  • The first class (e.g., “6” in a 6/XX) applies to properties within 5 road miles of a recognized fire station and within 1,000 feet of a fire hydrant or alternate water supply.
  • The second class (XX or XY) applies to properties beyond 1,000 feet of a fire hydrant but within 5 road miles of a recognized fire station.
  • Alternative Water Supply: The first class (e.g., “6” in a 6/10) applies to properties within 5 road miles of a recognized fire station with no hydrant distance requirement.
  • Class 10 applies to properties over 5 road miles of a recognized fire station.

If you would like to know more about our PPC, please contact ISO at (800) 444-4554 option 2.