What is the role of a hydrologic study in septic system planning?

The role of a hydrologic study in septic system planning is primarily to evaluate water movement and availability. This study assesses how water flows through the soil and the surrounding landscape, including the direction of groundwater flow, the depth of the water table, and the rate of infiltration. Understanding these factors is crucial for ensuring that the septic system will function properly and not contaminate nearby water sources.

Evaluating water movement helps to determine the suitability of the site for a septic system, as it impacts the system’s ability to treat wastewater and prevent environmental contamination. Proper assessment of water availability also informs the design and placement of the septic system, ensuring it is not located near surface water bodies, wells, or other sensitive areas where excess moisture could lead to system failure or pollution.

Other options may pertain to different aspects of planning, such as soil texture, permitting processes, or cost assessments, but they do not directly address the hydrologic aspects necessary for effective septic system design and environmental protection.