A 100-year-old galvanized supply system in an East New York building has very likely reached the end of its functional life. Signs it's already failing: low pressure on upper floors, rust-colored water at first draw, and increasing frequency of pinhole leaks. If you're not seeing any of those yet, a pressure test and inspection of accessible sections will tell you how much life remains. In most cases, 100-year-old galvanized is on borrowed time, and repiping proactively is significantly less disruptive than repiping after multiple failures across occupied apartments.
Nehemiah rowhouses built from the 1980s onward were constructed with modern materials: copper supply, PVC or cast-iron DWV, and forced hot-water or gas heating systems rather than steam. The plumbing is 35–40 years old now, which means water heaters are likely on a second or third replacement and boilers are approaching the end of their lifespan. The issues in Nehemiah homes are aging modern systems, not century-old original pipe — a different scope than the pre-war tenements on adjacent blocks.
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