Water treatment facilities in Rwanda are critical for ensuring safe drinking water, yet their efficiency varies significantly. A randomized design was employed to assess system performance under controlled conditions. Key parameters included turbidity, pH levels, and residual chlorine concentrations. The analysis revealed that by adjusting dosing protocols for chemical disinfectants, the mean reduction in turbidity from initial readings was found to be -25% with a 95% confidence interval of (10%, 40%). Randomized field trials proved effective in identifying areas for improvement in water treatment facility systems. System operators should consider implementing the identified dosing adjustments as part of ongoing maintenance protocols to enhance system efficiency and water quality. water treatment, randomized trial, Rwanda, efficiency gains The maintenance outcome was modelled as Y₈ₓ=₀+₁X₈ₓ+uᵢ+₈ₓ, with robustness checked using heteroskedasticity-consistent errors.
Bakatsa Rugamba (Mon,) studied this question.