When planning your new home, be sure to carefully evaluate your septic options and expense. There are many different systems including, but not limited to, mound, gravity flow and pressure distribution.
Soil permeability is a major issue in determining the best location and design for the drain field. Areas with high water tables and shallow, impermeable soil layers should be avoided because there is insufficient soil thickness to ensure adequate treatment of the effluent. Identifying a suitable location for a secondary drain field as part of the siting process is prudent in the event of unforeseen freezing or flooding issues. You might also want to consult a soil expert to test the permeability of the soil.
The size of your tank and drain field will be determined by the number of bedrooms in your home. If your family is not familiar with septic systems, you might want to provide lists of do's and don'ts accompanied by discussions about the dangers and expense of a failed septic system. City habits can be tough to break but good habits will pay off in the long run.
Coordinate with your contractor and a septic system professional to determine the best system and siting for the environment. Proper prior planning is essential to a successful rural building project.