Tehran Officials and Urban Experts Weigh In on the City's Water Crisis and Summer Heat Emergency

Tehran is entering what municipal water authority officials are privately calling the most severe summer strain on the capital's infrastructure in at least a decade. Reservoir levels at Latian Dam, which supplies a significant portion of drinking water to the city's eastern districts, had fallen to roughly 18 percent of capacity by the end of June, according to figures circulated within the Tehran Regional Water Company. Officials confirmed this week that rotating pressure cuts affecting neighborhoods from Narmak to Shahrak-e Gharb are likely to continue through at least mid-August.

The timing is brutal. Europe is burying more than 2,000 heat-related dead after its own June peak, and Tehran is watching those figures with alarm. The capital recorded a high of 42.3°C on June 29 — two degrees above the seasonal average for that date — according to the Meteorological Organization of Iran. City planners who spent years designing around a temperate-summer baseline are now openly admitting their assumptions were wrong.

Officials Point Fingers, Engineers Urge Action

The head of Tehran's Urban Planning and Research Center gave a briefing last week to the city council in which he stressed that the current network of water distribution pipes — much of it installed before 1979 and never fully replaced — loses an estimated 30 percent of treated water to leakage before it reaches residential taps. That single statistic has become the focal point of a sharp internal argument. Conservative council members want emergency funds directed toward tanker fleets for underserved southern neighborhoods including Shahr-e Rey and Islamshahr. Technocratic voices within the municipality are pushing instead for accelerated pipe replacement in the Velenjak and Tajrish corridors, where pressure collapses during peak afternoon demand.

Engineers affiliated with the Iranian Society of Civil Engineering held a public seminar at the Iran University of Science and Technology in Narmak on June 30. Attendees heard presentations arguing that without a 15,000-kilometer pipe overhaul program — estimated to cost upward of 80 trillion tomans over five years — no surface-level fix will hold. That figure has landed in the lap of city budget officials who are already managing a municipal deficit and a rial that has shed roughly 12 percent of its value against the dollar since January.

Residents in the Yakhchiabad district in southern Tehran say they have gone without piped water for stretches of six to eight hours daily since the second week of June. Community representatives from the local mosque council there submitted a formal complaint to the Tehran Province Governor's Office on June 24. As of this week, they had received no written response.

What City Hall Is Actually Promising

Tehran Mayor's office issued a three-point statement on July 1 committing to deploy 200 additional water tanker trucks across 22 city districts, expand night-shift pipe repair crews operating under the Tehran Water and Wastewater Company, and complete a diagnostic audit of the Karaj River intake infrastructure by September 1. Critics note that at least the first two of those measures were promised in a near-identical statement issued during the 2021 summer drought and were only partially delivered.

The practical advice circulating among residents and endorsed cautiously by public health officials at Shahid Beheshti University of Medical Sciences: store a minimum of 20 liters of drinking water per household per day during peak heat hours of 1 p.m. to 5 p.m., avoid washing cars or filling private pools, and report visible pipe leaks on streets to the 122 emergency water hotline rather than waiting for a scheduled inspection. The hotline received more than 9,400 calls in June alone — double its monthly average from the same period in 2024.

The city council is scheduled to take up an emergency supplementary budget proposal on July 8. Whether the pipe overhaul funds make it into that document, or whether the money goes to tankers and short-term political optics, will tell residents a great deal about how seriously city hall is treating what engineers are calling a structural, not seasonal, emergency.