This document describes a prefabricated sewage treatment plant (PFSTP) that is designed for small-scale sewage generators like apartment complexes, hotels, and industries. The PFSTP employs a Moving Bed Bio Reactor technology that offers efficient processing and high quality treated water. It has a compact design that allows for quick installation within a day on a concrete platform, with minimal civil works required. The PFSTP is fully automated and comes with a two-year guarantee. It is a low-maintenance option for treating sewage that meets regulatory discharge standards.