A water bank is a system of accounting and paying for measures that offset or mitigate water losses due to water withdrawals, sewering, and/or increased impervious areas that prevent aquifer recharge. The purpose of a water bank is to provide a water supplier with the resources necessary to mitigate the demands of new development through conservation, leak detection, education, or infrastructure improvements. For example, a water banking program might require that new connections or increased demands be mitigated through payment into a fund, proportional to the amount of water r