The urban stormwater farm.

Area of Science:

• Environmental Science
• Urban Planning
• Sustainable Agriculture

Background:

• Over 3 billion people live in urban areas, with this number projected to double by 2050.
• Rising global food prices, driven by factors like oil prices and climate change, heighten food security concerns.
• Urbanization leads to high energy and water consumption, alongside significant wastewater and stormwater runoff due to impervious surfaces.

Purpose of the Study:

• To propose an efficient method for addressing food security, carbon emissions, and stormwater pollution concurrently.
• To demonstrate the feasibility of using harvested urban stormwater for food production.
• To highlight the need for sustainable land-use planning in urban environments.

Main Methods:

• A case study approach was employed to investigate the proposed solution.
• Stormwater was harvested and stored from densely populated urban areas.
• The stored stormwater was utilized for food production.

Main Results:

• The study demonstrates that urban stormwater can be cost-effectively harvested and stored for food production.
• This method significantly reduces 'food miles' (carbon emissions) and 'virtual water' consumption.
• The approach offers a viable solution for enhancing urban food security.

Conclusions:

• Harvesting and utilizing urban stormwater for food production presents an efficient, integrated solution to multiple environmental and social challenges.
• This strategy contributes to reducing carbon footprints and conserving virtual water.
• The findings underscore the importance of integrating sustainable land-use planning to support resilient urban food systems.