#FridayFacts: Ep. 2 Rainwater Harvesting Systems

The second episode of our #FridayFacts video series features Paulina Oliva, Professor of Economics and Spatial Sciences at USC Dornsife, who is a recipient of a 2024-2026 Wrigley Institute Faculty Innovation Award. Her research explores a rainwater harvesting system developed in Mexico City as a response to water shortages.

When installed and properly maintained, these rooftop rainwater harvesting systems can significantly improve water quality and access for low-income households facing water scarcity. But despite their promise, poor upkeep has limited their long-term impact. To help overcome this challenge, Oliva’s research explores possible barriers to regular maintenance and how to overcome them. This work is part of a long-term effort, with a full-scale evaluation launching in summer 2026.

In the News

EfD Initiative: Paulina Oliva applies environmental economics to solve issues in the Global South >>

Poverty Action Lab: Rainwater Harvesting in Urban Settings >>

Alcaldes de Mexico: Social and economic benefits of rainwater capture systems [in Spanish] >>