Septic tank lateral lines are also known as percolation pipes. These are the perforated pipes that extend from the outlet of the septic tank below ground into the soil. The purpose of these lateral lines is to provide a network of pipes that the effluent from the septic tank runs through. Lateral lines are part of the septic system.
When the septic tank is done with treating the wastewater with anaerobic bacteria, the pre-treated effluent runs through the lateral lines.
These lines are pipelines that distribute the pre-treated effluent into the drain field. Septic leach fields fail when poor septic tank design allows drain lines ( laterals ) to clog with sediment “biomat forming”. The lines should pitch down at a rate of one-quarter inch per foot.
Septic drain fields, also called leach fields or leach drains, are subsurface wastewater disposal facilities used to remove contaminants and impurities from the liquid that emerges after anaerobic digestion in a septic tank. Failing septic systems are . Soil-based systems discharge the liquid (known as effluent) from the septic tank into a series of perforated pipes buried in a leach fiel . Figure 9), because the D-box ensures equal flow to all laterals.