According to the Environmental Protection Agency (EPA) guidelines, a drain field should be located at a minimum distance of 50 feet from a well. This distance is essential to safeguard the quality of drinking water and prevent contamination. By maintaining this distance, the risk of pollutants from the drain field, such as pathogens and nitrates, seeping into the groundwater and reaching the well is minimized. Adhering to this recommended separation distance ensures that the water supply remains safe and meets the necessary health standards, protecting the well and the overall well-being of the community.