What minimum distance must be maintained between wells and underground cisterns and the edge of spray areas?

Maintaining a distance of at least 100 feet between wells or underground cisterns and the edges of spray areas is essential for protecting water quality and ensuring public health. This distance is critical because it helps prevent contamination that may arise from the application of treated effluent or wastewater in spray areas, which can potentially seep into groundwater. Wells and cisterns are sources of drinking water, and any contamination from nearby spray areas could lead to serious health risks for humans and animals.

The rationale for this substantial distance emphasizes the importance of groundwater protection, especially in regions where the aquifer has limited recharge capabilities. Moreover, by adhering to the specified distance, it reduces the risk of pathogens, chemicals, or nutrients from spray areas infiltrating the well or cistern water supply, thereby safeguarding water quality and ensuring compliance with environmental regulations.

Distances shorter than 100 feet may not sufficiently mitigate these risks, which is why this minimum distance is stipulated in guidelines to promote safe and sustainable water management practices.