Methodological Evaluation of Municipal Infrastructure Assets Systems in Nigeria: Panel Data Estimation for Measuring Cost-Effectiveness

In Nigeria, municipal infrastructure assets systems are crucial for water supply but often face challenges in cost-effectiveness and management. The study employs a fixed effects model to analyse the performance indicators of municipal infrastructure assets across different regions over time. Panel analysis revealed significant variations in asset utilization rates (averaging around 75%) between urban and rural settings, with higher costs associated with older systems (standard error: ±10%). The fixed effects model effectively captures the heterogeneity in municipal infrastructure performance across regions. Integrating technology upgrades into maintenance plans can enhance asset longevity and cost-effectiveness. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.