Abstract: The study investigates the Effects of Customers Satisfaction on Sustainable Cash flow in Urban Water Supply and Sanitation Authorities particularly Arusha, Urban Water Supply and Sanitation Authority. The main objectives of the study are: to examine the effect of customers’ satisfaction on sustainable cash flows in Arusha Urban Water Supply and Sanitation Authority. The study was conducted within Arusha Urban Water Supply and Sanitation Authority The study involved 110 respondents and will adopt a generic design, and data will be collected through questionnaires; interviews and documentary review. AUWSA should team up with the village programs so that they cover a large area. The study found some wards like Muriet and Olasiti to have established their own water source and supply.