What is the required separating distance from a sewage tank to a water supply well when the well has a flow rate between 10-50 gpm?

The required separating distance from a sewage tank to a water supply well when the well has a flow rate between 10-50 gallons per minute (gpm) is 150 feet. This requirement is established to ensure that any potential contaminants from the septic system do not migrate into the water supply, thereby protecting public health and the integrity of the drinking water.

The 150-foot distance takes into account the potential for groundwater movement and the varying rates of contamination that can occur, especially given the well's capacity. Distance regulations are critical because they offer a buffer zone that helps prevent the contamination of drinking water wells by sewage effluent, which can contain harmful pathogens and pollutants.

For wells with different flow rates, the required separation distance can vary. Higher flow rates typically require greater distances to ensure safety. Thus, while options such as 100 feet or even greater distances might be suitable for other scenarios, 150 feet specifically addresses the balance between safety and practicality for wells within the specified flow range.