Effects of leak detection system on reducing non-revenue water losses in Tanzania: A case of Rombo water supply and sanitation authority

Resumo

For water utilities, non-revenue water (NRW) presents a serious problem that impacts both operational effectiveness and long-term financial viability.  This study examines how NRW losses in ROMBOWSSA can be decreased by using wireless networks in conjunction with smart leak detection and acoustic sensors. The study employs DeLone and McLean IS Success Model to evaluate how technological performance directly mitigates water losses at ROMBOWASA. Population size was 30719 that includes customer/water users and employees (150) from ROMBOWSSA. The study used Random sampling to obtain a sample of 395 participants. The study employs cross sectional research design. Structured questionnaires were used to gather data, and multiple regression analysis and descriptive statistics were used for analysis. The results show that Smart Leak Detection is the most significant predictor of NRW reduction (B = 0.764, Beta = 0.764, p < 0.001), while Acoustic Sensors also contribute positively (Beta = 0.153, p < 0.001). Together, these technologies explain 76.4% of the variation in NRW reduction, highlighting their effectiveness in enhancing leak detection, timely repairs, and operational efficiency. The study concludes that adopting advanced leak detection systems is a practical strategy for minimizing water losses, optimizing resource allocation, and promoting sustainable water management in ROMBOWSSA and similar utilities. The study suggests that ROMBO-WASSA prioritize investment in leak detection systems, implement data analytics tools for predictive and real-time decision-making, and integrate smart metering with billing systems. It also suggests that staff members receive ongoing training and capacity building.