From the Warrenville FPD website:

The Warrenville Fire Protection District has achieved an Insurance Services Office (ISO) Class 2 rating that could decrease homeowners’ insurance costs beginning July 1st. The Insurance Services Office (ISO) of Commercial Risk Services measures and grades city services on a five- year cycle. ISO is an international company, which insurance companies use when determining homeowners’ insurance rates. Fire departments are measured on a scale from 1 to 10, with 1 being the highest. The Warrenville Fire Protection District obtained an ISO Class 3 rating in 2012.

Warrenville Fire is one of 1,393 fire departments out of 44,672 fire departments across the country to receive an ISO Class 2 rating, which puts the fire district in the top 3.1 percent of the Nation.

The Insurance Service Office (ISO) is a division of Verisk Analytics, which analyzes a community’s fire suppression measures like its 911 call center, water supply, fire apparatus and equipment, fire prevention, community risk reduction, personnel, training, response times, and operations. Statistical data on insurance losses bears out the relationship between excellent fire protection — as measured by the Public Protection Classification (PPC program) — and low fire losses. PPC helps communities prepare to fight fires effectively. The purpose of an ISO public protection survey is to gather information to determine a Public Protection Classification 

The Warrenville Fire Protection District is a combination department consisting of 10 career, 42 paid-on-call, part-time, and contract firefighter/paramedics. The district currently has 61 members including support staff.

The District earned additional ISO credit by implementing a community risk reduction program through our fire prevention bureau that considers the specific needs of the community which includes a free smoke alarm program, Knox Box for Senior’s and fire safety educational program for the local school system. In the never-ending, always-changing world of emergency services, data is the key ingredient for a fact based decision-making process.