What is one type of calculation that must be considered for maximum hydraulic loading rate?

The maximum hydraulic loading rate is influenced primarily by soil type, as it dictates how well the soil can absorb and filter water. Different soil types, such as sand, clay, or loam, have varying permeability and retention characteristics, which directly affect how much effluent can be safely applied to the soil without creating issues like surface runoff or groundwater contamination. Soil texture, structure, and the presence of organic matter all contribute to determining the maximum hydraulic loading rate, making it a critical factor in the design and installation of septic systems.

While the design flow rate, tank size, and distribution method are also important considerations in a septic system's functionality and efficiency, it is the soil type that ultimately governs how much water can be effectively handled by the soil over time. This understanding ensures that septic systems operate within safe loading limits, preventing potential environmental hazards and system failures.