Biofilta’s innovation is a modular, water efficient urban food growing system that optimally provides over a week’s worth of water for vegetables while also providing aeration to the roots. The Foodwall system can be linked to form rows, stacked vertically to triple the growing area of any space and provide a typical capital payback period of less than 3 years based on the value of food produced. The low maintenance, high yield farms can be horizontal or vertical in design and utilize surplus rainwater runoff and food waste from urban environments for food production. The farms provide urban cooling effects to reduce the Urban Heat Island of cities and can simultaneously assist with reducing runoff and improving water quality.