Optimizing Investments in Alternative Water Infrastructure for Urban Food Production in Water Stressed Cities

Urban Farm DB summary

This study developed a spatial optimization model to identify investment strategies for deploying rainwater harvesting (RWH) and reclaimed water systems to expand urban food production in water-stressed cities. Applied to Tucson, Arizona, the model showed that 72%–96% of investment was allocated to rainwater tanks, though RWH contributed only 18%–27% of total food production. The results indicated that expanding the reclaimed water network was more effective and cost-efficient for urban food production compared to implementing rainwater tanks.