Galvanized supply lines corroding from the inside
Why it happens here
That pattern follows a mid-century ranch core. Pressure drops, water discolours, and pinhole leaks start behind walls. Indian Creek's mid-century ranches used galvanized steel supply lines, with early copper in places. Over decades the zinc coating wears away and the steel rusts from the inside out.
Our approach
The pipe stock here is mid-century galvanized and copper. We pressure-test the system in Indian Creek and the result usually sorts the two eras: a mid-century ranch with galvanized supply closing from the inside, or 1990s infill on copper or PEX where a pressure problem has a different cause. Where corrosion is isolated, we replace that section; where it runs through the house, we plan a phased repipe and show the pressure readings before and after.