Water is inherently short in supply in this arid nation. The difference is this crisis is hitting the capital, said Kaveh Madani, director of the United Nations University Institute for Water, Environment and Health. Tehran, home to around 10 million people, could run out of water altogether if consumption levels are not reduced, experts fear.
The roots of the crisis lie in a tangle of factors including what engineers describe as decades of poor water management and an increasing imbalance between supply and demand.
It's all compounded by climate change.
Iran is experiencing one of its worst droughts on record, and its fifth consecutive year of drought. The country is also baking under brutal heat. Temperatures spiked above 122 degrees Fahrenheit in parts of the country this month, according to climatologist and weather historian Maximiliano Herrera. "Iran seems almost perennially in a record-heat status," he told CNN.
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📸 : Atta Kenare/AFP/Getty Images
Momentum in sustainable construction is now driven by tangible progress in materials and methods rather than declarations. The focus on reducing embodied carbon in materials and undertaking robust whole life carbon assessment is reshaping how developers, architects and engineers define sustainable building design. Initiatives such as the Reducing Plastics in Construction Summit reinforce the value of renewable building materials, eco-design for buildings and circular economy in construction frameworks to eliminate petroleum-based polymers and improve resource efficiency in construction.
Biobased composites, recyclable resins and modular approaches are being evaluated through lifecycle assessment tools that can accurately measure the carbon footprint of construction and inform sustainable material specification throughout each project stage. Digitisation is rapidly becoming integral to low carbon design and energy-efficient buildings. Advanced platforms now enable unified modelling of cost, performance and carbon, aligning lifecycle cost optimisation with environmental sustainability in construction.
TM2 Bygg’s software-led method illustrates how low carbon building processes built on data-driven insights help achieve net zero carbon buildings and deliver improved building lifecycle performance. At the policy level, regulators are reinforcing requirements for measurable reductions in embodied carbon and clear evidence of net zero whole life carbon outcomes. These shifts point toward an industry-wide transformation grounded in whole life carbon transparency and the adoption of BREEAM v7 and other sustainable building practices to standardise reporting.
The result is a market that values circular construction strategies, end-of-life reuse in construction and environmental product declarations (EPDs) as verification of a project’s environmental impact of construction. New renewable energy infrastructure, including next‑generation geothermal systems, could redefine the carbon footprint reduction potential of green building materials and low carbon construction materials. As baseload renewables expand, achieving carbon neutral construction and sustainable urban development becomes increasingly viable. The sector is moving beyond pilot projects toward a mature phase of green construction, integrating life cycle thinking in construction and decarbonising the built environment as core business practice.
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