What is the required distance from drip irrigation when Ra is less than 0.1 to the Edwards Aquifer?

When dealing with drip irrigation systems in relation to the proximity to the Edwards Aquifer, the required distance is critical for protecting water quality and preventing potential contamination. According to regulations, when the recharge area (Ra) is less than 0.1, maintaining a buffer is imperative due to the aquifer's vulnerability.

A distance of 100 feet is specified in this scenario because it serves as a standard buffer zone to ensure that any potential pollutants from the irrigation system do not reach the aquifer. This distance helps manage the risks associated with moisture and material that may leach into the ground, ensuring that the drinking water source remains protected.

Larger distances, such as 150 feet or 200 feet, may be more cautious but are not the standard requirement in this specific case of Ra being less than 0.1. There's also the practicality consideration: requiring excessive distances may not be feasible for agricultural or landscaping practices. A distance of 50 feet is insufficient to provide the necessary protection for potable water sources, which is why it is not suitable in this context. Therefore, maintaining a 100-foot distance is aligned with best management practices for safeguarding the Edwards Aquifer.