There are many types of septic systems, and each system has different requirements. Soil conditions are the most important factor to consider. Before an estimate is given, a licensed site evaluator will determine the condition of the soil and which septic system would work best. Other factors, such as the location of the system and the number of bedrooms in the home, must also be taken into account. An approximate range for a standard size residential home is $7,000 - $25,000.
The first step in performing a soil analysis is to dig profile holes. A technician will use a backhoe machine to dig holes, approximately 2 feet wide by 3 - 5 feet deep, depending on whether a rock is present or not. Test holes are required to be located at the opposite ends of the drain field.
Determining which type of system is to be installed is the first step. A site evaluator must visit the lot and perform a soil analysis by examining profile holes, which should be excavated on the proposed location of the drain field. Other determining factors are location of the septic system and its components in reference to the size of the lot, proper drainage, slope, setbacks, topography, flood hazard, and separation.
Next, a design of the septic system, along with the permitting paperwork, will be proposed to the proper regulating county or licensing authority. Once a permit to construct is issued, usually 30 - 90 days after submission, your site is ready for system installation.