Questions pertaining to wells and water resources can be addressed to the Delaware Geological Survey. In many areas of Delaware, water well contractors can provide a very close estimate of well depth, water yield, and water quality. However, in other areas, it can be very difficult to predict how deep a well will be and the amount of water it will yield because of the complexity of subsurface geology. In addition, costs may vary for a particular location based on the type of well to be constructed. The consumer will have to evaluate the type of well required based not only on cost, but also on desired quantity and quality of water, dependability of supply, and susceptibility to contamination by undesirable fluids.
Some contractors quote price estimates based on cost per foot of drilling.
Others provide an itemized breakdown which includes drilling per foot, casing per foot, grouting, and costs of other materials. This report contains well construction details such as depth, diameter, water level, and well yield. The owner of the well should obtain a copy of the report for future reference.