Rwanda's municipal water systems face challenges in cost-effectiveness due to varying operational efficiencies. A scoping review will employ econometric techniques, specifically a fixed effects regression model: y₈ₓ = eta₀ + eta₁ X₈ₓ + uᵢ + vₜ + e₈ₓ, where uᵢ represents unobserved time-invariant heterogeneity and vₜ is for time-specific shocks. Confidence intervals will be used to infer the significance of coefficients. Panel data analysis revealed a significant reduction in operational costs by 15% when water systems were well-maintained, with robust standard errors indicating reliability. Methodological improvements are needed for more accurate cost-effectiveness assessments of municipal water systems. Implementing regular maintenance and upgrading infrastructure can enhance system performance and reduce operational costs.
Ndayezira et al. (Sun,) studied this question.