What are site evaluations used for in OSSF planning?

Site evaluations are a critical step in the planning process for On-Site Sewage Facilities (OSSF) as they focus on assessing factors that impact the effectiveness and safety of sewage disposal. The primary purpose of a site evaluation is to examine the soil conditions, topography, and the proximity and location of water sources, which are essential for determining how well a septic system will function on a given piece of land.

Soil conditions are vital because they affect drainage capabilities, which in turn determine how wastewater will be treated and if it can be adequately absorbed by the ground. Poor drainage can lead to surface runoff or groundwater contamination. Topography also plays a crucial role since slopes can affect the flow of wastewater and the potential for flooding or erosion. Additionally, understanding the location of nearby water sources is necessary to prevent contamination of drinking water supplies and ensure compliance with health regulations.

By focusing on these essential aspects during site evaluations, the planning process can optimize the OSSF design to ensure it functions effectively and safely.