Earth Day: Charting a course for a water-secure future

Celebrated annually on April 22, Earth Day is a powerful reminder of our collective responsibility to care for the planet. One of its most vital resources, water, demands urgent attention. Globally, communities face unprecedented challenges, from severe scarcity to pollution and climate extremes. 

To tackle these complex issues, the Water and Production Economics (WPE) unit at the University of Cape Town brings together leading academics, researchers, and policy advisors from around the globe. In honour of Earth Day 2026: Our Power, Our Planet, we are highlighting three sessions from our ongoing UCT-UCR seminar series "Water Economics and Politics" that show how research paves the way for a more sustainable, water-secure world. By applying economic principles to complex water challenges, experts are not just analysing problems, they are creating actionable pathways to ensure our planet's most vital resource is managed wisely for generations to come.

Turning wastewater from a liability into an asset

Traditionally seen as a source of pollution, wastewater holds untapped potential. By analysing the costs and benefits of wastewater treatment and reuse, researchers at the UNU Institute for Water, Environment and Health in Canada show that recycled water can be a viable global solution to scarcity. This approach not only alleviates pressure on freshwater sources but also creates new economic opportunities. | A seminar with Prof. Manzoor Qadir, Deputy Director of the United Nations University Institute for Water, Environment and Health (UNU-INWEH), Canada. See details and  recording.

Navigating climate extremes with smart economics

Climate change is intensifying water-related challenges, such as droughts and floods. Researchers at the University of California's Agricultural Issues Center in the United States use advanced Hydro-Economic Models (HEMs) to understand and mitigate these impacts, particularly in vital sectors such as agriculture. Studies on California's agriculture used HEMs to model the effects of drought and test adaptation strategies. This provides policymakers with data-driven tools to build resilience against climate shocks. | A seminar with Prof. Josué Medellín-Azuara, Associate Director at the University of California (UC) Agricultural Issues Center and agronomist at UC Merced Agricultural Experiment Station, United States. See details and  recording.

Innovating water markets for fairer allocation

In water-scarce regions, getting water where it is needed most is a major hurdle. By analysing bargaining power in water markets, like Australia's Murray-Darling Basin, researchers at Flinders University, Australia, identify ways to make these systems fairer and more effective. This is crucial for balancing the competing water needs of agriculture, urban populations, and the environment, ensuring that limited resources are used sustainably. | A seminar with Professors Sarah Ann Wheeler and Alex Zuo from the Water, Environment and Food economics policy group (WEF group) in the College of Business, Government and Law at Flinders University. See details and  recording.

The UCT-UCR Seminar Series: Water Economics and Politics is an initiative from the WPE unit at the University of Cape Town (UCT), in collaboration with the University of California, Riverside (UCR). It brings together leading academics, researchers and policy advisors to share innovative approaches to global water challenges.