Hi. I grew up in a house built in 1834. I'm now in college and my parents still live at home. I am a senior in Mechanical Engineering and when I'm home I look around and see the things I can improve. The electricity was all just redone by a very good electrician (and not a moment too soon, from what I saw come out!). But now I am turning my attention to their water. I believe they have about 35-40 psi from a spring, but I am curious to know what typical water pressure for a house is (ie potential). I am going to keep looking online for an answer- it seems to be about 50-70 is appropriate. However, I figured there would probably be a standard, but I can't find one. I'll run some calculations with 40 psi that they have (w/o a booster pump) and see what kind of piping I'd be looking at. Any help is appreciated! thanks from WVU!