Drilling a well is a rather expensive operation, often costing several thousand dollars. But if you’re going to drill your own well, the first question you’re going to need to ask yourself is: Where? Where is the best place on your property to get what is called “sweet” water, rather than highly mineralized water?
In much of the country, anywhere you drill is going to yield pretty much the same results. Groundwater tends to run in aquifers, which are layers of water trapped in porous stone or sand. But if your underlying geology is rock, it may not be porous enough to allow water to flow through the rock. In cases like that, groundwater is going to be flowing through cracks in the rock, and these cracks are a much harder target to find.
So before drilling, it’s a good idea to do some investigating. That way, you’ll have a much better chance of actually finding water when you sink that hole.