The water management practice of storing water underground for use during dry periods is a very effective technique that has been practiced for a long time. Another water management practice that has been around for a long time is collection of rainwater and storage of rainwater aboce ground. There have been significant advances more recently in our understanding of aquifer geology and technologies used for rainwater harvesting. This article combines our advance in knowledge of storing and recovery water from wells and new rainwater harvesting practices to recharge a low yielding exempt well with treated rainwater. The studies presented in this article demonstrate that exempt wells provide a valuable underground water storage option and may provide a new effective urban water management tool.