This document proposes a portable mini sewage treatment plant to treat wastewater generated from houseboats on Dal Lake and other water bodies in Jammu and Kashmir. The treatment system uses maceration, enzyme blocks, aerobic treatment with microorganisms, attached growth on inert material, activated carbon filtering, and UV dosing to treat wastewater to meet pollution standards. It is a compact, automatic, eco-friendly system that can be retrofitted to existing houseboats to treat sewage on-site without regular sludge removal or oil/grease management.