Heres the story;
The well is 400ft deep with water at 180ft. The well is going to serve two houses. I was planning to fit a 2 wire 1.5hp submersible pump with a 3/4 heavy gauge poly pipe and a 100ltr pressure tank. Firstly is this a good set up and secondly would i need a non return valve at around 200ft to minimise the back pressure on the pump? Any replies greatly appreciated!!