Evaluation of Cost-Benefit Valuation of Solid Waste Minimization at Vingunguti in Dar es Salaam City, Tanzania

Abstract

An increasing rate of urbanization and unprecedented rising human population growth challenges solid waste management. In developing countries, such challenges are exacerbated by the presence of inefficient infrastructure. Hence, the objective of this paper was to evaluate the cost-benefit valuation of solid waste minimization at Vingunguti ward in Dar es Salaam City, Tanzania, using appropriate standard methods of data collection involving documentary review and focused group discussion. The type of data for cost-benefit valuation on solid waste minimization at source (household) excluded transfer stations and landfill costs and benefits. Analysis of cash outflow and inflow of private sector engagement on solid waste minimization at the household level delivered positive net present value. Such results can only be realized if and only if the monthly refuse charge per household is paid as required, which happen rarely. Sensitivity analysis at a rate of 8±2 delivered positive net present value in both scenarios. The findings signal refuse charges policy reviews, hence removing solid waste piling in the streets of Dar es Salaam City, Tanzania.