According to Building Advisor, the cost for drilling a well and installing a septic system may be $20,000 or more, depending on the region where the well and septic are installed and depth of the well. Permits, licensing fees, soil testing and supplies are included in the cost estimate.
Drilling companies charge per foot of depth when drilling a water well. The average drilling cost is $15 to $40 per foot. Some counties require soil testing before a septic system is installed. Percolation testing ensures the soil is appropriate for a septic tank and can cost anywhere from $100 to $500. The well and necessary supplies, such as the well pump, range from $1,000 to $5,000, in addition to the cost per foot for drilling and any necessary permits or fees. The septic tank, cost of excavation to bury the tank, and pipe for the septic system range from $5,000 to $30,000, depending on the region.