21/07/2026
Happy to see my article on rainwater harvesting in Mexico was the top Global Development story on the The Guardian yesterday.
On the last working day of my Latin American trip, a story I’d been trying to nail down for the Guardian finally came me off. I took a two and half hour taxi ride (thanks Mexico City traffic) to a small informal settlement in Cristo Rey to visit Ana Aparicio Bahena, who showed me how a rainwater harvesting system, which captures water from the roof and filters, has transformed her life.
Before, Aparicio Bahena used to have to walk to a well and carry buckets of water back up the hill to her home; now she has enough water to bathe regularly, to clean, to wash clothes, and water her garden across most months of the year.
“I can grow vegetables,” Aparicio Bahena proudly told me, holding up a small onion. “I have avocados, lemons, potatoes … I never used to be able to grow my own food. It’s wonderful.”
Like many informal settlements across Mexico, Aparicio Bahena’s metal-roofed home is not connected to the water network, and for years she had to collect water from a well about 30 minutes away.
Meanwhile, in the neighbourhood of Benito Juárez in Mexico City, I visited Dora Napolitano, who relies on a 5,000-litre rainwater harvesting system in her garden to cope with scarcity. While Napolitano has access to tap water, unlike Aparicio Bahena, the textile artist told me she bought the system in 2018 for environmental reasons.
“I was increasingly aware that the way we were living in Mexico City was completely unsustainable,” says Napolitano, who lives with her husband and four children, aged between 17 and 25. “Parents would complain about the traffic, the poor air quality, the flooding and the lack of water, but nobody took any responsibility. I’m not exonerating the government, but I felt the need to discover how much I could do.”
Across Mexico, NGO IslaUrbana’s rainwater harvesting systems have provided water for one million people.
Always a privilege for people to allow me into their homes and share their stories.