I'm on a shared supply (1930's semi) and despite my complaints to Yorkshire Water about low pressure when my neighbour is using the water supply they refuse to do anything about it. The have tested the flow rate which they say meets minimum requirements but the test was carried out when no one was in next door. The pipe that supplies my house is lead but they say they don't operate a lead pipe replacement scheme so thats not an option. The cost to have a new seperate mains feed to my property is around £2k including survey costs which I can't afford so that is out of the question but I have seen mains booster pumps advertised recently so hopefully that's an option. The shared supply goes to my neighbours house first, would a booster pump draw away pressure from them if fitted to my side or would it be ok.