What is a primary use of pressure distribution systems in septic installations?

The primary use of pressure distribution systems in septic installations is to avoid potential contamination of groundwater beneath excessively permeable soils. These systems function by distributing effluent over a larger area and applying it under pressure, which allows for more uniform distribution across the drainfield. This is particularly important in areas with highly permeable soil, where effluent can quickly travel through the soil layers and reach the groundwater before it has had sufficient time to be treated effectively.

By controlling the flow of effluent and enhancing its dispersion, pressure distribution systems help to prevent localized saturation and over-concentration of effluent in one area, which can lead to groundwater contamination. This method ensures that effluent is adequately treated by the soil, allowing for better filtration and reducing the risk of pathogens and nutrients leaching into the groundwater.

Using pressure helps to manage the infiltration rate, which is critical in maintaining the effectiveness of the treatment process, especially in soils that might otherwise allow effluent to bypass treatment due to their high permeability.