Briefly touching on open loop geothermal applications here, it is the right application for some, but not everyone. Typically, there are increased pumping costs and infrastructure to replace components that wear more rapidly that when used simply for domestic water supply and those cost need to be discussed in the early stages of the decision making process.
Many of the problems associated with short-cycling systems in the past can not be mitigated with variable speed pump systems, commonly referred to as Constant Pressure Systems.
You must make sure that you have an adequate water supply for both your geo unit and your domestic water supply.
You must make sure that you have an adequate location for the discharged water to run off that will not be subject to freezing problems in the winter.