In the vast majority of cases, yes. If your low water pressure is caused by decades of mineral buildup, corrosion, and scale choking the inside of old galvanized pipes, a whole-house repipe will completely restore your water volume. New Copper Type L or PEX-A pipes feature smooth interiors that allow water to flow freely, meaning you will once again be able to run multiple fixtures—like a shower and the washing machine—at the same time without a frustrating drop in pressure.