the BWJFD currently has an ISO score 05 / 5Y

 The first number refers to the classification of properties within 5 road miles of a fire station and within 1,000 feet of a creditable water supply. The second number, with either the X or Y designation, applies to properties within 5 road miles of a fire station but beyond 1,000 feet of a creditable water supply. ISO generally assigns Class 10 to properties beyond 5 road miles. 

https://www.isomitigation.com/ppc/

The Insurance Services Office (ISO) rates fire departments across the Country on a 1-10 rating system that is indicative of the department’s ability to suppress structure fires.  The lower your score the better.

There are three main criteria that the scoring system looks at:

10% of the score comes from the capabilities of the dispatch center and the type of communication system that you have.

40% of the score comes from a review of the water supply system.

50% of the score comes from a review of the fire department’s first alarm response and initial attack capabilities to minimize potential loses.

Engine Companies 6 points

Reserve Pumpers 0.5 points

Pump Capacity 3 points

Ladder/Service Companies 4 points

Reserve Ladder/Service Trucks 0.5 points

Deployment Analysis 10 points

Company Personnel 15 points

Training 9 points

Operations Considerations 2 points

Community Risk Reduction 5.5 points (In addition to the 50 points above)

https://www.isomitigation.com/ppc/