The Meter Management System (MMS) provides an interface to control the water credit supplied to yard meter users as well as water vendors. The system was designed to simplify the tasks of the water provider and to address the problems commonly encountered by the water supply authority. The MMS can accommodate approximately eight thousand areas with eight sub-tariff structures (consisting of eight tariff steps each plus a possible free water allowance). Up to twenty thousand stands / properties can be registered under one sub-tariff structure. The system caters for daily or monthly free water allowance, eight stepped tariffs, emergency credit and loan repayment. Comprehensive reports are included, e.g. Sales Reports (Vendor Sales, Sales Analysis, Sales per Stand, Purchase Profile, Sales Distribution, Sales Exception and Sales Trends), Consumption Reports (Consumption Analysis and Consumption Profile) and Special Reports (Faulty Meters and Account Numbers).