The standard isolation area (sanitary setback) for a well without automatic disinfection is?

The standard isolation area, also known as the sanitary setback, for a well without automatic disinfection is established to protect the water source from potential contamination. Such setbacks are critical preventive measures that ensure the quality of the groundwater being drawn by the well.

A 200-foot setback is considered appropriate for wells without disinfection because it provides a significant buffer zone to minimize the risk of contaminants from nearby sources, such as septic systems, agricultural runoff, or other pollutants. This distance helps mitigate the impact that surface contaminants can have on groundwater quality, ensuring that the water remains safe for consumption.

In many regulatory frameworks, including those for well construction and groundwater protection, a 200-foot isolation distance strikes a balance between safety and practicality, especially in areas where there may be varying land use practices. Adhering to this standard helps maintain the integrity of the water supply and protects public health. In contrast, shorter distances might not offer adequate protection against the variety of potential hazards, making the 200-foot standard the more widely accepted guideline in situations involving wells lacking disinfection methods.