What is the required distance between a well and a septic tank?

The correct answer is 100 feet. This distance is specified to ensure that the well is adequately protected from potential contamination that could arise from the septic tank. When a septic tank operates, it can release effluent and other contaminants into the ground. By maintaining a distance of 100 feet, the likelihood of those contaminants contaminating the groundwater and subsequently the drinking water sourced from the well is minimized.

This separation distance is also based on guidelines from health and environmental agencies, taking into consideration factors such as soil types, drainage, and the potential for groundwater movement. Ensuring this distance helps to safeguard public health by reducing the chances of pathogens and nitrates from the septic system affecting the well water.