We are planning to go that way. As we choosing to live in Lithuania with the water at least for our lifetime we won't have issues. There are two types of wells. One that it is not deep one and you can get water manually, it is not so deep, in dry season it might get dry and it is a great space for bacterias and other things. And another type that people usually choose artesian well. Lithuania is rich in fresh waters.
You can have filters for the water (all kind) and reuse it for example for the garden needs.
About electricity, there is a possibility to combine your off-grid solar energy system with the providers. I believe this is a good biginner's step. You can choose the electricity provider witch is green.
We want to create a sustainable green home, but practical and comfortable.