How can tree roots impact a septic system?

Tree roots can significantly impact a septic system by invading and clogging pipes and drain fields. This is a common issue because tree roots are naturally drawn to moisture, which can lead them to penetrate septic system components. When roots invade the pipes, they can cause blockages that restrict the flow of wastewater, leading to backups and system failure. In the drain field, roots can disrupt the soil structure and hinder the absorption of effluent, affecting the overall performance of the septic system.

The other choices, while discussing various environmental factors associated with trees, do not accurately depict how tree roots interact with septic systems. For instance, while trees can enhance soil aeration or help prevent soil erosion in different contexts, these benefits do not apply to the functioning of a septic system and can, in fact, be detrimental to its efficiency if roots interfere with system components. Thus, the most pertinent impact of tree roots on a septic system is their potential to clog and damage the system.