What is the required separation distance from a septic tank to a municipal water source?

The required separation distance from a septic tank to a municipal water source is typically established to prevent contamination of drinking water. The distance of 100 meters is considered a standard benchmark because it provides a sufficient buffer to protect groundwater from potential pathogens, nutrients, and pollutants that can leach from the septic tank into the surrounding soil and groundwater. This distance takes into account factors such as soil permeability, groundwater flow direction, and potential for contamination, ensuring that any effluent from the septic system is adequately filtered by the soil before it can migrate to the water source. Additionally, regulations and guidelines from health departments or environmental agencies often specify this minimum distance to safeguard public health.