The world has entered "an era of global water bankruptcy" with irreversible consequences, according to a new United Nations report.
Regions across the world are afflicted by severe water problems: Kabul may be on course to be the first modern city to run out of water. Mexico City is sinking at a rate of around 20 inches a year as the vast aquifer beneath its streets is over-pumped. In the US Southwest, states are locked in a continual battle over how to share the shrinking water of the drought-stricken Colorado River.
"If you keep calling this situation a crisis, you're implying that it's temporary. It's a shock. We can mitigate it," said Kaveh Madani, director of the UN University's Institute for Water, Environment and Health, and the report's author.
With bankruptcy, while it's still vital to fix and mitigate where possible, "you also need to adapt to a new reality… to new conditions that are more restrictive than before," he told CNN.
The statistics in the report are stark: more than 50% of the planet's large lakes have lost water since 1990, 70% of major aquifers are in long-term decline, an area of wetlands almost the size of the European Union has been erased over the past 50 years, and glaciers have shrunk 30% since 1970. Even in places where water systems are less strained, pollution is reducing the amount available for drinking.
"Many regions are living beyond their hydrological means" and it's impossible now to return to conditions that used to exist, Madani said.
It brings human consequences: nearly 4 billion people face water scarcity for at least one month every year.
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📷: Yasin Akgul/AFP/Getty Images; Elke Scholiers/Getty Images; Kevin Carter/Getty Images; Morteza Aminoroayayi/Middle East Images/AFP/Getty Images
Sustainable construction is entering a new phase defined by systems thinking, measurable performance, and finite resource management. With the UN warning of global “water bankruptcy”, developers and city planners are shifting towards sustainable building design that aligns every project to a quantifiable water and carbon budget. This transition links water stewardship to whole life carbon strategies, creating an operational framework that integrates lifecycle assessment and life cycle cost analysis as core decision tools.
In drought-affected regions such as the US Mountain West, sustainable building practices are moving from ideology to infrastructure, embedding low carbon design principles that balance density, water reuse systems, and local ecosystem preservation. In India, repeated landslide losses reveal the environmental impact of construction in exposed zones, prompting a shift towards resilient planning, circular economy in construction methods, and stronger land policy to secure long-term environmental sustainability in construction.
Global markets are rewarding corporate and housing projects that embody low embodied carbon materials and eco-friendly construction at scale. A leading technology company’s redevelopment of its Redmond campus demonstrates how net zero carbon buildings can combine green construction with durable asset value. These projects incorporate embodied carbon in materials benchmarking, BREEAM v7 certification, and net zero whole life carbon objectives, evidencing that carbon neutral construction has become a mainstream performance standard.
Across housing, the convergence of affordability, health, and net zero carbon performance signals that sustainable architecture and eco-design for buildings are achievable beyond showcase prototypes. By integrating renewable building materials, building lifecycle performance benchmarks, and circular construction strategies, developers are defining a new normal where sustainable urban development supports both economic and environmental outcomes.
Fragmented energy and regulatory conditions are driving design for flexibility—fusing all-electric systems where feasible with hybrid resilience where the grid lags. Builders adopting whole life carbon assessment, low carbon building strategies, and end-of-life reuse in construction are positioned for advantage. The future of the sector rests on those capable of decarbonising the built environment through resource efficiency in construction and life cycle cost thinking in construction, ensuring that every development is water-wise, low-impact, and resilient by design.
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