Final answer:
The minimum required distance between a septic tank and a private well is 50 feet to prevent water pollution and contamination of the well water.
Step-by-step explanation:
A private well should maintain an appropriate distance from a septic tank to prevent contamination of the well water, especially from fecal matter and other pollutants. According to health regulations and guidelines, the minimum distance required between a septic tank and a well is 50 feet (Option A). This distance helps to ensure that pollutants from the septic tank do not seep into and contaminate the water supply from the well. Water pollution can occur when a well is dug too close to a source of contamination, like a septic tank, as contaminants can travel through the soil and into the well water. The basic components of a septic tank system, which include the sewer line from the house, the septic tank itself, and the drain field, are designed to treat sewage anaerobically and filter water back into the environment safely. However, improper location or poor maintenance of these components can lead to significant health risks.