Why are sites with large trees less desirable for mound installations?

Sites with large trees are less desirable for mound installations primarily because the presence of these trees impacts the infiltration area required for the septic system and complicates the preparation of the surface for installation.

Large trees have extensive root systems that can interfere with the septic system by penetrating the mound and causing blockages. Additionally, the shade provided by large trees can lead to reduced evaporation from the soil, which is essential for proper functioning of the mound system. This can result in saturated conditions that compromise the system's ability to effectively treat wastewater.

Moreover, preparing the surface for a mound installation on a site with large trees can be challenging. The area may require significant clearing and grading to accommodate the installation, which may be difficult to achieve without damaging roots or affecting the health of the trees.

Overall, the combined issues of compromised infiltration capacity and the difficulties associated with site preparation make locations with large trees less suitable for effective mound installations.