EXCLUSIVE: Water Laureate Kaveh Madani on Arrest, Exile and Fight for Science

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by Umar Manzoor Shah (united nations)
Wednesday, March 25, 2026
Inter Press Service

UNITED NATIONS, March 25 (IPS) - Professor Kaveh Madani of Iran has been named the 2026 Stockholm Water Prize laureate. The award will be formally presented by King Carl XVI Gustaf of Sweden in August during World Water Week in Stockholm.

The Stockholm Water Prize is widely regarded as the highest global honour in water science and policy. Often called the Nobel Prize for water, it recognises individuals and institutions for exceptional contributions to the sustainable use and protection of water resources. This year’s selection stands out for both scientific impact and the extraordinary personal journey of the laureate.

At 44, Madani is the first Muslim and the youngest recipient in the prize’s 35 year history. He is also the first United Nations official and the first former politician to receive the award.

Madani currently serves as Director of the United Nations University Institute for Water, Environment and Health. Once a senior official in Iran’s government, he later faced arrest, interrogation, and a sustained smear campaign that forced him to leave his country.

Born in Tehran in 1981, Madani grew up in a family deeply connected to Iran’s water sector. His early exposure to the country’s mounting water challenges shaped his academic direction. He studied civil engineering at the University of Tabriz before moving to Sweden to pursue a master’s degree in water resources at Lund University. He later earned a PhD from the University of California, Davis, followed by postdoctoral research at the University of California, Riverside.

By his early 30s, Madani had established himself as a leading systems analyst. He joined Imperial College, London, where his work focused on the mathematical modelling of complex human water systems. His research combined hydrology, economics, and decision sciences to improve policymaking in water management.

In 2017, he made a decisive move. Leaving a prestigious academic career in London, he returned to Iran to serve as Deputy Vice President and Deputy Head of the Department of Environment. Many viewed his appointment as a signal of reform and a bridge between Iran and its scientific diaspora.

During his tenure, Madani pushed for transparency and structural reforms in water governance. He used innovative public campaigns to raise awareness about environmental degradation. However, his efforts challenged entrenched interests.

State-aligned media accused him of espionage and labelled him a “water terrorist” and “bioterrorist”. Conspiracy theories circulated, linking him to foreign intelligence agencies and even to alleged weather manipulation schemes. His advocacy for international environmental agreements further intensified opposition.

In early 2018, a broader crackdown on environmental experts began. Madani was detained and interrogated multiple times. Several of his colleagues were arrested. One of them, Kavous Seyed Emami, died in custody under contested circumstances.

Facing mounting pressure, Madani left Iran and entered a period of exile. He joined Yale University, where he continued his research and advocacy. He began to focus more on bridging science and policy at the global level.

Madani’s academic contributions have been widely recognised. He is known for integrating game theory into water resource management. His work challenged traditional models that assumed cooperation among stakeholders. He demonstrated that individual incentives often lead to uncooperative behaviour, which makes many engineering solutions ineffective in practice.

This approach provided new tools to understand conflicts over shared water resources. It has been applied to transboundary water disputes and to policy design in regions with limited trust among stakeholders.

One of his most influential contributions is “water bankruptcy.” He introduced the term to describe a condition where water systems can no longer recover to their historical levels. Unlike a crisis, which implies a temporary disruption, water bankruptcy signals a long-term structural failure.

In a recent United Nations report, Madani argued that the world entered an era of global water bankruptcy in January 2026. The report highlighted that many river basins and aquifers have lost their capacity to regenerate. This framing has sparked debate among policymakers and researchers.

Madani uses simple financial language to explain complex ecological realities. He argues that humanity is no longer living off renewable water flows but is depleting long-term reserves. This framing has made the concept widely accessible and influential.

Beyond academia, Madani has built a strong public presence. With a large following on social media, he has used digital platforms to communicate scientific findings in accessible ways. His work includes documentaries and public campaigns aimed at increasing awareness and accountability.

He has also played key roles in international diplomacy. As Iran’s lead environmental diplomat, he participated in global negotiations and served as Vice President of the UN Environment Assembly Bureau in 2017. At the COP23 climate conference in Bonn, he called for greater attention to water in global climate agreements.

Today, as head of the United Nations water think tank, he continues to advocate for integrating water into climate and development policies. He has particularly focused on the Global South, where water stress closely links with food insecurity, migration, and conflict.

The Stockholm Water Prize Committee cited his “unique combination of groundbreaking research, policy engagement, diplomacy, and global outreach, often under personal risk” in awarding him the 2026 prize.

In an exclusive interview with Inter Press Service, Madani recalled the intense pressure and fear that defined his final days in Iran. He described repeated interrogations, surveillance, and a growing sense that his work had placed him in direct confrontation with powerful institutions.

Here are edited excerpts from the interview:

IPS: You introduced the idea of “water bankruptcy.” How does this change how governments must act today?

Madani: Water bankruptcy is defined as a post-crisis state of failure in which the system is suffering from insolvency, meaning that water use has been more than the available water for an extended period, and also irreversibility, meaning that there are some damages to the ecosystem and the machinery of water production that are irreversible and cannot be fixed.

What that means is that some of the things that used to be just anomalies and abnormal conditions are now the new normal, and we’re no longer experiencing only a temporary deviation from what we are used to, but we have a situation that we have to get used to. Crisis management is about mitigation.

Bankruptcy management is about mitigating what can still be mitigated and adapting to new realities with more restrictions. Bankruptcy management calls for an honest confession, the admission of a confession that a mistake has been made, and the current business model is not working, so it calls for honestly admitting to the mistakes made and transforming the business model, that calls for a fresh new start and a change of course.

It is bitter. Bankruptcy is not a pleasant condition but admitting to it helps us prevent further irreversible damages and enables a future that is less catastrophic.

IPS: You faced arrest, exile, and serious accusations in Iran. What kept you going during that period?

Professor Madani: Hope. Hope is what kept me going because I had gone back there to help and at least at the start, I was trying to take what was happening to me as part of the job and as part of the adventure because I was there to make a positive impact, and if I had given up too quickly, then that would not have matched my essential motivation to help.

I knew that it would not be a very smooth path, but it turned out to be much more bumpy than what I had anticipated, and I think many also, you know, those who made that situation bumpy for me, also regret that today, but by the time they realised mistakes were made, it was too late to do anything about it.

Can you recall your arrest and interrogation? What do you remember most from that experience, and how did it affect you personally?

I think arrests and interrogations are very frustrating, especially when you haven’t done anything wrong.

What kills you is constantly worrying about what others think of you and coming up with different scenarios and conspiracy theories. Dealing with conspiracy theories and proving them wrong is not easy. Those were very hard times for me, but as you know, my background is in behaviour analysis. I was trying to put myself in the shoes of those who were suspicious of me, understand their concerns, and address them so I could help my homeland.

IPS: Many countries still treat water stress as a temporary crisis. What are the biggest policy mistakes they continue to make?

Madani: Yes, crisis management is all about mitigation. Those who deny the crisis and enter the bankruptcy state continue to borrow more from nature, build more infrastructure, dig deeper wells, add additional reservoirs and storage capacity, implement more water transfer projects and build more, and construct more desalination plants. Continuing to add to their supply, on the other hand, they think things would be temporary, and through some sort of rationing, things would be solved, but the continuation of that behaviour and the denial of that reality makes the problem worse.

They get drained into a deepening problem, and again, like the financial world, if your business model is not working and you’re in denial, you continue taking more loans and your expenses and your debt become higher and higher. By the time that people realise that there is no way out of that chaos and that failure, the cost is much, much higher. Remaining in denial would result in major significant irreversible damages that generations would have to pay for.

IPS: You combined science with diplomacy and public outreach. Which of these has had the most real impact on decision-making?

Professor Madani: It’s very hard to really say which one has the most impact, because they’re very complementary. The science is very good, but it’s not enough for decision-making. You still have to understand what the real world looks like and how incentives shape behaviour and actions and how interests promote conflicts and cooperation to be able to act.

Science, of course, opens doors and puts more solutions on the table, but still, without understanding the politics or navigating through politics, it would not work. Diplomacy is another one when it comes to the international scale; even when it comes to negotiating with stakeholders, that’s a skill that would be extremely helpful. So, in a way, these are the things that you need.

And on top of these, public outreach educates you about perceptions, how people and societies understand problems, how they judge different situations, and how their emotions and their perceptions shape their beliefs, and that tells you what you need to do when it comes to communicating your science better, changing their opinion, impacting their opinion, and even negotiating with them or convincing them that things might be different or a different pathway is required. I think they all help you create a recipe for something that might work.

IPS: Your work focuses on human behaviour in water management. Why do technical solutions alone often fail?

Madani: A lot of times, technical solutions developed by our computer models or in our labs don’t take into account the full elements of reality. When humans are involved, we deal with different motives, incentives, emotions, and psychologies, and that makes – that creates – some essentially unexpected realities that might tweak things. Simply put, a lot of times when it comes to developing a solution for a water problem or an environmental solution or a sustainability solution, we think that everyone agrees to making short-term sacrifices for the sake of long-term resilience, but that is not the case in reality because different stakeholders, different groups, farmers, urban users, and industrial users also have short-term goals.

They maximise profit, make sure that the quality of life is not impacted, and so on, which makes them non-cooperative to an extent. And if you miss this reality, then you think that the solution, the optimal solution, is very practical and everyone would cooperate, but then you get very disappointed.

Yet, you can take that into account to the extent possible, try to understand the behavioural element and incorporate those into your assessment and projections to be able to align those incentives and motives with the long-term interest to offer a solution that is more attractive and win-win.

IPS: You now advise governments globally. What is the one urgent action every water-stressed country must take in the next five years?

Madani: I think that by now, countries must understand the importance of water as an essential resource for establishing peace, national security, justice, prosperity, and development. I mean, it supports human development, health, and long-term resilience in society. So, countries must not take it for granted and understand that technological solutions would not be sufficient to address shortages.

They must revisit their practices. They must do a proper accounting to understand what, what’s, and how water is currently being spent and if it’s strategic – strategically speaking, that is the right way of doing things when it comes to matters of national security and long-term resilience. Bankruptcy management starts with accounting and transparency.

That’s something that is missing in many water-stressed and non-water-stressed countries, and I think that’s something that we can focus on, put the lens of science on, and not be afraid of accounting and measuring and monitoring what is happening in the system because that knowledge is required if you want to make improvements.

IPS: Thank you very much for taking the time and speaking to IPS and congratulations again for the well-deserved award.

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