Tehran's Looming Water Crisis: A Countdown to "Day Zero"

Tehran, the capital of Iran, is facing an unprecedented water crisis, with officials warning of an impending "Day Zero," when the city's taps may run dry. As of late 2025, major reservoirs, including the Karaj Dam, which supplies a quarter of the city's drinking water, are alarmingly low, with levels reported at just 8% of capacity. The situation has been exacerbated by six consecutive years of severe drought, with rainfall during the critical September to November period falling 89% below the long-term average. President Masoud Pezeshkian has indicated that if rain does not return soon, parts of the city may need to be evacuated.

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The water crisis in Tehran is not solely a result of climatic conditions; it is also deeply rooted in decades of mismanagement and unsustainable agricultural practices. Approximately 90% of Iran's water consumption is allocated to agriculture, which has expanded significantly since the 1979 revolution, often in arid regions ill-suited for such practices. This over-extraction has led to the depletion of aquifers and a reliance on increasingly scarce water resources. The population of Tehran has nearly doubled since 1979, further straining water supplies as consumption has quadrupled.

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In response to the crisis, Iranian officials have implemented water rationing measures and reduced water pressure in urban areas. President Pezeshkian has called for urgent action, stating, “If it doesn’t rain in Tehran by late November, we’ll have to ration water. And if it still doesn’t rain, we’ll have to evacuate Tehran.” Experts, including Kaveh Madani from the United Nations University Institute for Water, Environment and Health, have echoed these sentiments, emphasizing the critical nature of the situation.

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Critics point to the government's failure to manage water resources effectively, highlighting the role of what has been termed Iran's "water mafia," a network of politically connected individuals profiting from water mismanagement. Environmental activists have accused the government of prioritizing short-term political gains over sustainable practices. Hashem Ureii, head of the Federation of Energy Scientific Associations, has labeled the situation as "water bankruptcy," arguing that nearly 90% of national water consumption goes to agriculture, diverting attention from the real issues.

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While many sources agree on the severity of the crisis, there are discrepancies regarding the exact levels of reservoir capacities and the effectiveness of government responses. Some reports indicate that Tehran's main dams are as low as 3% full, while others suggest a slightly higher figure of around 9%. Additionally, the government's claims of implementing effective water rationing measures have been met with skepticism from residents, who report inconsistent water supply patterns.

Iran’s Water Emergency: A Man-Made Collapse Decades in the Making

As the situation continues to deteriorate, Iranian officials are exploring the possibility of importing water from neighboring countries, a significant shift from the country's historical emphasis on agricultural self-sufficiency. However, the feasibility of such measures remains uncertain, given that many of Iran's neighbors are also grappling with their own water shortages. Without substantial reforms in water management and agricultural practices, Tehran's looming Day Zero may become a reality, posing significant risks to social stability and governance in Iran.

Water Crisis in Iran Puts Pressure on Leadership to Find a Viable Solution

• “We are trapped everywhere in Iran over water… Tehran is worse than here.” — Masoud Pezeshkian, President of Iran

Iran’s Water Crisis, Currency Freefall and Toxic Air Expose a Regime at Breaking Point

• “What we are witnessing today as a water crisis is the result of a long path of decisions, policies, and human interventions — not a sudden event.” — Environmental Researcher

Iran’s Water Emergency: A Man-Made Collapse Decades in the Making

• “If rainfall does not arrive by the end of mid-December, the possibility of water rationing becomes serious.” — Hojjat Miyan-Abadi, Hydrologist

Iran’s Water Emergency: A Man-Made Collapse Decades in the Making

• “He told Sky News: "These things were not created overnight.” — Kaveh Madani, Director of the UN’s Institute for Water, Environment and Health

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