What is the minimum distance a septic tank should be constructed from a water supply source to prevent contamination?

The minimum distance a septic tank should be constructed from a water supply source is typically set at 15 meters to effectively prevent contamination. This distance is essential because it offers a buffer zone that reduces the potential for pathogens and pollutants from the septic system to migrate into the groundwater or surface water, which may ultimately affect drinking water sources.

The recommended distance is based on studies of soil absorption and the behavior of contaminants, ensuring that any potential leachate from the septic tank can adequately infiltrate and be filtered by the surrounding soil. By maintaining this distance, the risk of waterborne diseases and other contamination issues is minimized, safeguarding public health.

Distances that are less than 15 meters risk inadequate filtration and could lead to direct contamination of water supplies, which is why the established guidelines favor the greater distance to ensure safety and compliance with health regulations.