Keene residents are facing the possibility of water bills skyrocketing as the Union Pacific Railroad subsidiary that operates their water system seeks dramatic rate increases or permission to abandon service entirely. The Keene water system, originally built to supply steam locomotives, has been maintained under a legacy agreement since trains were phased out. Union Pacific has been trucking in water to supply the small community, but now says the operation is financially unsustainable. … The water system has petitioned the California Public Utilities Commission for permission to either dramatically increase rates or abandon the system altogether.