Founder Effect. The Founder Effect is defined as a type of bottleneck, a type of genetic drift describing the loss of the allelic variation that accompanies founding of a new population from a very small number of individuals (a small sample of a much larger source population).
For example, two well drilling companies -- one in Pennsylvania and one that covers New Hampshire, Vermont and central Massachusetts -- state the cost for drilling a well and outfitting it with pump equipment averages between $5,000 and $7,000, at the time of publication.
Therefore, my recommendation is always to put the well in first, because if you come up dry you have to move it, which might be restricted by your septic location. So, well first, which typically runs from $2-4,000 fixed cost plus about $30-60/LF of well depth depending on rock type.