It's going to vary...they hit water at 40', and dug until they hit 120' for storage. That plus wiring it up to my generator (2 months before I got the electricity because no one is in a hurry to do anything around here), it was just under $5k. If I had rural water run there (about 1500' from the house's pad), it would have cost around $6.5k. Then I'd have to pay for treated water at $50 a month. On the well I get my money back for the well in less than 10 years using that metric.