What are galvanized pipes and why do they matter in older homes?
Quick answer: Galvanized steel was a common water supply pipe in homes built before the 1960s, so it appears in some of Bloomington's older houses. Over decades the interior corrodes and accumulates mineral scale, restricting water flow, reducing pressure, and discoloring water with rust. Galvanized pipe eventually fails and leaks. An inspector identifies galvanized supply lines, checks water pressure and flow, and notes corrosion, since aging galvanized plumbing often warrants replacement with modern copper or PEX.
The corrosion happens from the inside out. As the zinc coating wears away, the steel rusts and scale builds up, gradually choking the pipe's interior. This is why homes with galvanized supply often suffer low water pressure and rusty-colored water.
Flow problems are a telltale sign. An inspector running fixtures may notice weak pressure, especially when multiple fixtures run at once, pointing to restricted galvanized lines. Visible corrosion at threaded joints is another indicator the pipe is aging.
Because galvanized pipe nears or exceeds its lifespan in older Bloomington homes, replacement is common. Repiping with copper or PEX restores flow and reliability, and identifying the material during inspection lets you budget for the upgrade.
