Our shared water supply pipe is quite old and comes off the water main at the junction and travels up our private road/track to each house. There are 6 dwellings on the road. The pipe then goes across a field, rising vertically by 80 feet to another 2 dwellings. The pipe is about 2" in diameter and the static pressure is 4 bar (max). The total length of the pipe is 800m. Those at the end of the pipe get 2 bar and the working pressure is quite poor as you can imagine. What would we need to do to get the pressure up and how close to 4 bar would it get if we did an upgrade of the pipe? How much would it cost? Can we hire equipment and do it ourself.