Short Wave Day Zero: When the wells run dry
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Mar 23, 2026 A look at cities that nearly ran out of water and what 'day zero' really means. Reports from Cape Town, Mexico City and Tehran highlight failed systems, leaks and theft. The conversation covers infrastructure breakdowns, aquifer depletion, urban demand and how scarcity deepens inequality.
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Living On 50 Liters A Day
- Erin Baker lived through Cape Town's 2017–2018 drought when residents were limited to 50 liters (13 gallons) per person per day.
- She described daily calculations: one 90-second shower, two liters for drinking, and choosing between dishes or laundry under strict limits.
Day Zero Is A System Failure Multiplier
- Cities hit Day Zero from a mix of failing infrastructure, mismanagement, aquifer depletion, urban demand, and climate change amplifying stress.
- Filippo Menga called climate change an "enormous sort of bonus card" that worsens existing systemic faults.
Half The Water Never Reaches People In Mexico City
- Manuel Perlo explained Mexico City's losses: 30–35% lost in leaks and another ~10% stolen, meaning up to half the water never reaches consumers.
- He noted many poorer neighborhoods were never connected and permanently live in Day Zero conditions.