What is water bankruptcy? Definition, causes and engineering solutions

Jan 28, 2026

Water bankruptcy refers to a situation in which more water is consumed than can be naturally replenished, treated, or sustainably managed, putting future availability, water quality, and economic viability at risk. In this context, technological innovation in water engineering, such as the solutions developed by Salher, plays a key role in slowing and reversing this trend.

In recent days, the concept of water bankruptcy has gained public attention following the release of a report by the United Nations University Institute for Water. According to the study, many natural water systems have already surpassed their recovery thresholds and will not be able to return to their historical conditions, posing an unprecedented challenge for global water governance.

For decades, humanity has sustained an intensive water exploitation model based on:

  • Increasingly deeper wells
  • More powerful extraction pumps
  • Inter-basin water transfers
  • Wetland drainage
  • River diversions
  • Overexploitation of aquifers

all at a pace that far exceeds the planet’s natural capacity to regenerate water resources.

Within this scenario, engineering, technological innovation, and specialized companies such as Salher can play a critical role in developing solutions to mitigate environmental impacts, optimize available water resources, and move toward a more resilient and sustainable water management model.

Kaveh Madani, Director of the United Nations University Institute for Water

 “Around 4 billion people, nearly half of the world’s population, experience severe water scarcity for at least one month each year, without sufficient access to meet all their needs”.

Kaveh Madani

 “The world has already overcome temporary water crises, and many natural water systems can no longer return to their historical conditions. They are in a state of collapse: water bankruptcy”.

Kaveh Madani

 “Water bankruptcy requires redesigning cities, economies and food production to live within new limits before they become even stricter”.

Kaveh Madani

 “Despite these problems, countries continue to increase their water demands to support the expansion of cities, farmland, industries and, now, data centres”.

How to Maximize the Use of Every Cubic Meter of Water

Although the report warns that we are entering a post-water-crisis phase in which some systems may never fully recover, it also highlights the urgent need to reduce impacts, protect existing water resources, and optimize the use of available water.

Salher’s urban and industrial wastewater treatment systems, hydrocarbon separators, and pretreatment solutions help prevent the degradation of water bodies, protecting both ecosystems and critical infrastructure.

At the same time, water reuse systems make it possible to recover treated water for new applications, reducing pressure on natural sources and supporting a circular water economy. Ozone generation technology enables effective disinfection by reducing pathogens and organic compounds without relying on aggressive chemical products, improving the quality of treated water.

The development of tailor-made solutions for industrial wastewater allows pollutant loads (COD, BOD, solids, metals, fats, and oils) to be reduced, facilitating internal water reuse and improving overall process efficiency.

In addition, Salher’s compact plant designs enable scalable and adaptable solutions for municipalities, industries, hotels, and remote facilities, strengthening local water resilience and supporting more sustainable water management worldwide.

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