Financial Sustainability of water schemes is vital for ensuring continuous provision of water service. Reducing the Government's participation in direct delivery of water services, encouraging participation of private operators, enhances efficiency and sustainability of water services. The book show evidence of a significant relationship between the private operator model and financial sustainability of rural water schemes. Based on key concepts of the four pillars model of financial sustainability, this book anvils the statistical relationship between various attributes of Homa Bay Water and Sewarage company and financial sustainability of its rural water services. The book concludes that consistent implementation of strategic and financial plans, improving diversification of internal income sources, ensuring that procurement activities are strictly guided by relevant laws and policies, as well as reducing non-revenue water and unaccounted for water, are crucial for improving the operator's competitiveness in the commercialised water market, as well as performance in defraying O&M costs and achieving financial sustainability for its rural water schemes.