An elevated service reservoir (ESR) is a water storage facility typically constructed at an elevated location to provide gravity-fed water supply to communities. These reservoirs are usually built on high ground or elevated structures, ensuring sufficient hydraulic pressure to distribute water to surrounding areas. They consist of a storage tank supported by sturdy columns or towers, with capacity ranging from thousands to millions of gallons depending on the population served. Elevated service reservoirs play a critical role in maintaining consistent water pressure, enabling efficient water distribution and firefighting capabilities while also serving as a backup during peak demand or emergencies. Regular maintenance and monitoring are essential to ensure the reservoir's structural integrity and water quality compliance.