Size of line and distance from your house will in no way be a concern for major losses. The line entering the house should not be more than 1/4inch larger than the line in the house.Imagine having a 1-3/4inch pipe flowing full speed ahead to your house from your well. Then imagine all that water trying to fit into the 1/4inch pipe inside your house.The force behind the water must go somewhere; that somewhere is your piping network. This will cause unwanted stress on your pipe joints. A flow regulator could be installed to reduce this stress, however this would be working against your pump and is very inefficient.Just so you know most service lines to homes are 1/2inch and even 1/4inch. I would go with 1/2inch if you are doing any irrigation and never less than 1/4inch. Any size bigger than 3/4inch is most likely too much for normal water needs.The one and only important number we must know here is how high must the pump lift the water. Add up the total height the water moves from the inlet (water level in well) to the outlet (highest tap). Your pump MUST be rated slightly higher than this total height.The pump manufacturer should be able to provide you with information to determine what pump size best suites your needs. All you need to show them is the height you added up.
