Urban gardening in Dakar faces severe water scarcity due to limited freshwater supplies. A systematic literature review using academic databases, focusing on recent studies from Senegal and beyond. Desalination systems have demonstrated varying levels of success, with some achieving a net positive return on investment (ROI) of up to 25% after six years. Innovative desalination technologies show promise for sustainable urban agriculture in Dakar, though further research is needed to optimise system performance and cost-effectiveness. Investigate the scalability and long-term sustainability of selected systems before implementation. Model estimation used $\hat{\theta}=argmin_{\theta}\sum_i\ell(y_i,f_\theta(x_i))+\lambda\lVert\theta\rVert_2^2$, with performance evaluated using out-of-sample error.