Why is maintaining vertical separation important in septic system installation?

Maintaining vertical separation in septic system installation is crucial primarily to prevent contamination of groundwater from septic effluent. This separation ensures that there is adequate space between the bottom of the soil absorption system and the groundwater level. If this vertical separation is insufficient, there is a significant risk that untreated or partially treated effluent can migrate upward into the groundwater. This contamination poses serious health risks to humans and the environment, as groundwater is often a source of drinking water.

Proper vertical separation is a critical factor in safeguarding both public health and the local ecosystem. Inadequate separation could lead to the infiltration of pathogens, nutrients, and other harmful substances into the groundwater, potentially endangering water quality and public safety. Therefore, maintaining this separation is a fundamental aspect of the design and installation of septic systems to ensure they function effectively and safely.