Residents within the River Delta Fire District will be happy to hear that their property insurance may see a decrease as the fire district recently improved its fire protection rating from the Insurance Services Office (ISO), according to the fire district. On Sunday, the fire district announced they have improved from a Class-5 fire protection rating to a Class-4. The ranking is from one to 10 with a one being the best and 10 being the worst. “What an amazing accomplishment for our Fire District and our entire community,” said Fire District Board President Les Wolfson. “This is a true testament to the level of commitment in providing excellent service to our residents.” The improved rating follows an independent investigation by ISO into the structural fire suppression delivery system of the River Delta Fire District.