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Sustainable water management is achieving economic, social and environmental benefits, say countries
More than 80% of countries have reformed their water laws in the past twenty years as a response to growing pressures on water resources from expanding populations, urbanization and climate change.
In many cases, such water reforms have produced significant impacts on development, including improvements to drinking water access, human health and water efficiency in agriculture.
At the same time, global progress has been slower where irrigation, rainwater harvesting and investment in freshwater ecosystem services are concerned.
These are among the findings of a United Nations survey of more than 130 national governments on efforts to improve the sustainable management of water resources.
The survey focuses on progress towards the implementation of internationally agreed approaches to the management and use of water, known as Integrated Water Resources Management (IWRM).
Backed by UN Member States at the 1992 Rio Earth Summit as part of an overall action plan on sustainable development (known as Agenda 21), IWRM is a way forward for efficient, equitable and sustainable development and management of the world's limited water resources.
Amid increasing and conflicting demands on the world’s water supply, IWRM integrates domestic, agricultural, industrial and environmental needs into water planning, rather than considering each demand in isolation.
The latest survey is intended to inform decision-making at the Rio+20 Conference in June 2012. Twenty years after the Earth Summit, world governments will once again convene in Rio de Janeiro to make decisions on how to ensure sustainable development for the 21st century.
The survey, which was coordinated by the UN Environment Program (UNEP) on behalf of UN-Water (the UN interagency coordination mechanism for freshwater issues), asked governments for their feedback on governance, infrastructure, financing and other areas relating to water management to gauge how successful countries have been in moving towards IWRM.
Overall, 90% of countries surveyed reported a range of positive impacts from integrated approaches to water management, following national reforms.
Other key findings include:
“The sustainable management and use of water – due to its vital role in food security, energy or supporting valuable ecosystem services – underpins the transition to a low-carbon, resource-efficient green economy,” said UN Under-Secretary-General and UNEP Executive Director Achim Steiner.
“As well as highlighting challenges, this new survey also shows important successes regarding integrated water resources management, where a more sustainable approach to water has resulted in tangible benefits for communities and the environment. At Rio+20, governments will have the opportunity to build on these innovations and chart the way forward for sustainable development where the water needs of a global population, set to rise to 9 billion by 2050, can be met in an equitable way,” said Mr. Steiner.
The UN survey shows the major environmental changes that have taken place between 1992, when IWRM was firstly widely backed by governments, and today, and how water resources are managed in the face of such challenges.
The world population, for example, has increased from 5.3 billion in 1992 to just over 7 billion today, with impacts being felt most strongly in developing countries. This has been accompanied by increased rural-to-urban migration and high refugee movements due to climatic and socio-political disasters.
Successes and Challenges
The survey shows that the introduction of IWRM on a national level varies greatly across the globe – from early planning stages to concrete implementation of new laws and policies.
When responding to the survey, some governments reported significant development impacts as a result of pursuing IWRM strategies since 1992, such as:
Yet many countries – particularly those in developing regions – signaled a need for increased capacity-building, investment and infrastructure development in order to fully implement integrated water resources management.
Country Perception of Key Issues
The water-related issues cited most often as ‘high’ or ‘highest priority’ by governments are infrastructure development and financing (79% of all countries) and financing for water resources management (78%).
Climate change is cited as a high priority for action in a majority of countries (70% overall) and 76% of countries considered that the threat to water resources from climate change has increased since 1992.
But the survey also highlights important differences between developed and developing countries in terms of water-related priorities. Using the Human Development Index, the survey categorized countries in four groups: low HDI, medium HDI, high HDI and very high HDI.
Ensuring adequate water supply for agriculture is a high priority for many low HDI countries, while the preservation of freshwater ecosystems ("water for environment") is a priority mainly for very high HDI countries.
The survey includes a number of suggested targets and recommendations, which are designed to inform decision-makers at Rio+20. These are based on an assessment of the findings from the survey and include: