ABSTRACT
A site inspection must be made before the system is designed in order to note potential problems and to perform necessary onsite tests. Since location of the septic system can be more restricted than the house location, it is best to site the septic system before the house and any on-lot water well are located. The depth and type of soils in the disposal area limit the amount and rate of wastewater that can be applied. A determination of the soil type is a necessary step in site evaluation, for it provides a check on the hit-or-miss percolation test. Whereas permeability is the capacity of soil to transmit water, percolation is the capacity to move water through a soil surface and into the soil. Once the types of liquid waste treatment and disposal systems best suited to a particular site and use have been selected, the most suitable location for the units should be determined.
