Diagnosed and repaired persistent low water pressure issues throughout two-story home. Found partially closed main shutoff valve and sediment-clogged aerators at multiple fixtures. Biggest issue was discovered in basement—corroded galvanized pipe with approximately 80% blockage from mineral buildup. Replaced affected section with copper and added two access points for future maintenance. Installed whole-house sediment filter at main line to prevent future buildup. Water pressure now testing at consistent 63 PSI throughout home.