Plumbing behind an 1823 river-bank county seat
William Conner and Josiah Polk laid out Noblesville's original 26 squares on the east bank of the White River in 1823, and the town's status as Hamilton County seat since 1824 has kept its historic core continuously occupied and continuously replumbed. A house near the original river-bank plat can have supply and drain lines dating to several different decades of municipal water expansion.
Rail-era growth versus today's supply lines
Noblesville incorporated in 1851, the same year the Indianapolis & Peru Railroad reached town, and the rail-driven growth that followed left a ring of older neighborhoods around the courthouse square with plumbing installed well after the homes themselves were framed — a pattern worth checking before assuming a fixture or water-heater swap is a simple one.