Iran’s water crisis is not only a story of climate — it is also one of overuse, inefficiency, and neglect. Groundwater depletion, wasteful irrigation, and outdated urban infrastructure have turned scarcity into collapse. This second part of our series explores how domestic mismanagement turned natural challenges into a full-blown hydrological disaster.
Iran is the Middle East’s biggest extractor of groundwater and ranks fifth globally after India, China, the United States, and Pakistan (Iran Open Data). The country pumps an estimated 57 billion cubic meters annually — nearly 9% of the global total. Decades of overuse have pushed over 300 of Iran’s 609 aquifers into critical condition. In Tehran, reservoirs are almost empty, and the capital faces possible rationing within months.
This relentless extraction has caused aquifer collapse, widespread land subsidence, and salinization. In many parts of the central plateau, the ground is sinking by several centimeters every year, threatening roads, heritage sites, and pipelines (PNAS).
Around 90% of Iran’s water is used in agriculture — most of it inefficiently. Government policies promoting food self-sufficiency encouraged growing thirsty crops like wheat, rice, and sugar beet even in arid regions. Modern irrigation covers less than 25% of farmland, leaving most farmers reliant on flood irrigation systems that waste enormous volumes of water (Fanack Water).
Outdated dams and diversion projects have made things worse. More than 600 dams have been built, but many now trap evaporating water in shallow reservoirs or disrupt natural flows that once replenished wetlands and aquifers. Urban growth compounds the issue — Tehran alone adds about 200,000 residents each year, stretching already limited municipal supplies.
Iran’s rivers, once lifelines for agriculture and ecosystems, are heavily polluted. Industrial waste and untreated sewage contaminate drinking water in cities like Ahvaz and Isfahan. Groundwater contamination from pesticides is widespread in farming zones, while saltwater intrusion is rising along the coast. Environmental regulation remains weak, fragmented across ministries, and often unenforced.
Although the Ministry of Energy and the Regional Centre on Urban Water Management (under UNESCO) have started to roll out a drought-monitoring system, experts warn that data transparency and integrated management are still lacking (IntelliNews).
In 2025, authorities called for a 20% nationwide cut in water use, but enforcement appears limited. Citizens report frequent cutoffs, water truck deliveries, and unreliable service. Grassroots initiatives now focus on restoring qanats and promoting drip irrigation in small farms — efforts that echo ancient Persian practices in sustainable water use. Whether these localized solutions can offset decades of neglect remains uncertain (Stimson Center).
