You need to be aware that the State will not allow a pump to go below the top of the aquifer. It also doesn't allow pumping of that water to a point more than 80% from its historic high level to the top of the aquifer. That eliminates a whole lot of the "available" water for pumping in that area. Then you need to be aware of many other reports concerning the water supply there. I stand by my statements. There isn't enough water to go around and there are too many permits being issued.
http://www.mgs.md.gov/hydro/pub/pdf/smdadmin.pdf
http://www.mgs.md.gov/hydro/pub/pdf/smdadmin.pdf