A Town Still Running on Threaded Steel

Homes built before the 1960s were plumbed almost universally in galvanized steel, and a large share of this town qualifies. The zinc coating that protected the steel wore away decades ago, and since then the pipe has been rusting from the inside, narrowing until pressure fades and joints begin to weep.

There is a water-quality dimension too: Water Research Foundation studies of galvanized pipe document its unpredictable corrosion and its tendency to accumulate lead over decades and release it as the interior rusts. Layered on top sits a century of renovations, copper here, PVC there, PEX in the remodeled bathroom, and the splices where eras meet are exactly where failures concentrate.