Δαφνη Ευτυχια Αρθουρος

Is all of your water supply anemic, or just the shower? If it's a universal problem, go down into the basement with someone who groks plumbing and look for the pressure regulator. Most of the time water comes into the house at a higher pressure and is then restricted before hitting the smaller pipes in your house; perhaps this restriction can be eased up a bit in your house. (But you don't want to just turn it off if you have small, old, or fragile pipes -- hence the person with plumbing clues.)