I have good pressure at the main, but low flows inside my home. What is the problem?
Restrictions in the line will reduce water flow and hence reduce flowing pressures. One of the most common problems in newer homes is improper pipe sizing. In older homes, scaling presents a significant flow problem for any home with older galvanized pipes. As water passes through over the years, corrosion deposits build up inside and partially block water flow. Some pipes may be so corroded that even a pencil would not fit through the center of the pipe. Running water through a corroded pipe like this is akin to sipping through a coffee stirrer instead of a straw, less fluid flows through.