Retired firefighters Julie and Dale Hutchinson stepped out the back door of their Banning Heights home on a hot night last July. A column of smoke and flames towered over the ridge above their home — the Valley fire was advancing toward their tiny community. Their first thought wasn’t the wildfire, it was lack of water. For two decades, the Hutchinsons and their neighbors in this rural enclave tucked above the I-10 freeway have fought to have Southern California Edison repair a century-old system that carries water down the San Gorgonio mountains to their homes.