Category Archives: Water in General

Water changes everything


The Prince of the Netherlands William Alexander on WasteWater

UNSGAB Chair and HRH Willem-Alexander, the Prince of the Netherlands, explains
why wastewater is not given enough political priority and should be treated as
an important resource.

State of the Climate Global Hazards (NOAA)

National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Center procides monthly reports on global hazards including droughts, flooding and tropical cyclones.

Please visit for more details.



United Nations Global Issues: Water

According to the Millennium Development Goals Report 2012, 783 million people, or 11 per cent of the global population, remain without access to an improved source of drinking water. Such sources include household connections, public standpipes, boreholes, protected dug wells, protected springs and rainwater collections. The world has met the MDG drinking water target five years ahead of schedule but work is not yet completely done. We must not forget that since it is not yet possible to measure water quality globally, dimensions of safety, reliability and sustainability may actually be slowing progress. Furthermore, there are regions particularly delayed such as Sub-Saharan Africa where over 40 per cent of all people without improved drinking water live.

The United Nations has long been addressing the global crisis caused by insufficient water supply to satisfy basic human needs and growing demands on the world’s water resources to meet human, commercial and agricultural needs. The United Nations Water Conference (1977), the International Drinking Water Supply and Sanitation Decade (1981-1990), the International Conference on Water and the Environment (1992) and the Earth Summit (1992) — all focused on this vital resource. The Decade, in particular, helped some 1.3 billion people in developing countries gain access to safe drinking water.

One of the most important recent milestones has been the recognition in July 2010 by the United Nations General Assembly of the human right to water and sanitation. The Assembly recognized the right of every human being to have access to sufficient water for personal and domestic uses (between 50 and 100 litres of water per person per day), which must be safe, acceptable and affordable (water costs should not exceed 3 per cent of household income), and physically accessible (the water source has to be within 1,000 metres of the home and collection time should not exceed 30 minutes).

UN system activities specially focus on the sustainable development of fragile and finite freshwater resources, which are under increasing stress from population growth, pollution and the demands of agricultural and industrial uses.

The crucial importance of water to so many aspects of human health, development and well-being led to the inclusion of a specific water-related target in the Millennium Development Goals (MDGs). At the same time, every target of the MDGs depends on the achievement of the water and sanitation target: eradicating extreme poverty and hunger; achieving universal primary education; promoting gender equality and empowering women; reducing child mortality; improving maternal health; combating HIV, AIDS, malaria and other diseases; and ensuring environmental sustainability.

To help raise public awareness on the importance of water for life, the General Assembly declared 2003 International Year of Freshwater. Also in 2003, the Chief Executives Board (CEB), the coordinating body for the entire UN system, established UN Water — a UN inter-agency coordination mechanism for all freshwater and sanitation related issues. To further strengthen global action to meet the water-related MDG targets, the General Assembly proclaimed the 2005-2015 period International Decade for Action, “Water for Life”. The Decade began on 22 March 2005, which is observed annually as World Water Day.


Access to water in the Millennium Development Goals Report 2012

  • The world has met the  MDG drinking water target five years  ahead of schedule.
  • In 2010, 89 per cent of the world’s population was using improved drinking water sources, up from 76 per cent in 1990. If current trends  continue, 92 per cent of the global  population will be covered by 2015.
  • The number of people using improved drinking water sources  reached 6.1 billion in 2010, up by  over 2 billion since 1990.
  • China and India alone recorded  almost half of global progress, with  increases of 457 million and 522 million, respectively.
  • The work is not yet done. 11 per cent of the global population—783 million people—remains without access to an improved source of  drinking water and, at the current pace, 605  million people will still lack coverage in 2015. .
  • In four of nine developing regions, 90 per cent or more of  the population now uses an improved drinking water source. In contrast,  coverage remains very low in Oceania and  sub-Saharan Africa, neither of which is on track to meet the MDG drinking  water target by 2015. Over 40 per cent of all people without improved drinking  water live in sub-Saharan Africa.
  • Since it is not yet possible to measure water quality globally,  dimensions of safety, reliability and  sustainability are not reflected in the proxy indicator used to track  progress towards the MDG target. As a result, it is likely that the number of  people using improved water sources is an overestimate of the actual number of people using safe water supplies.
  • Coverage with improved drinking water sources for rural populations is still lagging. In  2010, 96 per cent of the urban population used an improved drinking water  source, compared with 81 per cent of  the rural population. In absolute terms, because of population growth, the number of people without an improved  source in urban areas actually increased. In rural areas, on the other  hand, the number of people without an improved source of water decreased, from  1.1 billion in 1990 to 653 million in 2010. However, the gap between urban  and rural areas still remains wide, with the number of people in rural areas  without an improved water source five times greater than in urban areas.

The Economics of Wiser Water Use: Making the most from the quintessential resource

June 19th, 2012

Water is essential to nearly every economic activity and all ecological systems. It underpins a range of economic activities including farming, energy and industry. The water challenge encompasses a range of issues from both the demand and supply sides. Supply can refer to a quantity of water (volume) or a quantity of water at a sufficient quality level to enable a particular use. Insufficient supply, unreliable supply or mismanagement of existing supply are constraints on users. The rationale for water economics is not just wasteful water use, but more importantly how to address scarcity (quality and quantity) and the range of values of water. Applying smarter water economics can help manage the situation and enable actors to use water efficiently, protect it more vigorously and allocate it wisely.

A growing water gap

Water resources are both renewable and finite. Despite the presence of unexploited resources, such as deep groundwater resources, in many places there will be fairly limited options for increasing supply. As more accessible water resources are already being abstracted and with the increasing trend of energy prices, the costs of developing new water resource supply systems are expected to rise. The constraints are worsened by the degradation of ecosystems and declining water quality, which further reduce the availability of water for particular uses. As demand for water increases and availability remains ultimately limited, water scarcity emerges in more regions around the globe.

“Water economics seeks to apply economic principles and tools to address the growing gap between the supply and demand of water in order to pursue a more equitable and efficient use and allocation of water.”

A number of factors are set to escalate global water demand. Global population, which currently stands at seven billion people, is still growing at a high rate: an estimated one billion of additional population will be reached in merely 12 years. Population growth will exert some pressures toward higher economic growth that enables the provision of employment to the growing population. Even for those countries with matured population growth, the needs for better living standards and quality of life will require economic development. As water use is highly influenced by temperature, a warming planet will most likely intensify water demand, both for human and ecosystem services on which human activities rely.

Putting a value on water

Water economics seeks to apply economic principles and tools to address the growing gap between the supply and demand of water in order to pursue a more equitable and efficient use and allocation of water. It underpins investment in water management by demonstrating the tradeoffs and opportunity costs for different uses of water, and how the costs and benefits will be distributed across different groups in society. This in turn can lead to optimised strategies to enable the highest returns on water use. It also allows for strategic long term planning. In North America’s Rio Grande Basin, for example, a comprehensive study evaluated water use and allocation trajectories over time, and concluded that ensuring the sustainability of water stocks over the next 20 years would cost 6-11 percent of the total annual economic value provided by the basin. This knowledge allows decision makers to create policies that are informed by a stronger sense of the expected costs and benefits of conserving water.

“Economics facilitate a better understanding of water scarcity, its values, and the tradeoffs associated to different uses of water and management options. This understanding is important in finding efforts to reach a more equitable distribution of costs and benefits.”

Economic analysis also enables cost effective investments to keep water clean, and value the health benefits of cleaner water. For example, when Sweden decided to phase out the use and emissions of mercury, it first conducted extensive studies to estimate the costs of the health risks posed and the losses the nation would face by reducing the use of mercury in its different forms, such as dental amalgam. The costs of the health risks posed were greater than the expected losses, enabling a rational policy decision and phasing out of the use and emissions of the substance.

Overcoming obstacles to optimal management

Due to the existence of numerous socially constructed barriers, the true values of water are still not reflected in all water-related decision-making. Economics facilitate a better understanding of water scarcity, its values, and the tradeoffs associated to different uses of water and management options. This understanding is important in finding efforts to reach a more equitable distribution of costs and benefits. Overcoming those barriers will allow for the rationalization of use, align incentives and accommodate additional productive uses of water, thereby increasing overall welfare from the same volume of water.

“Water managers must become better at taking into account economic principles, including expressing water use in economic terms.ˮ

To achieve this, water managers must become better at taking into account economic principles, including expressing water use in economic terms, through the investigation of efficiency, effectiveness, equity, preference, risk and behavioral dimensions to managing the resource. This is an essential first step towards the creation of a common language between water science and policy, which is needed for constructive debate of water policy choices where the most economically efficient ways to manage water and reduce its waste can be clearly presented and understood by decision-makers.

While the challenges and pressures of water demand mount, recent advancements provide tools and technologies that can enable us to address them. Hydro-economic modeling is one tool that has improved our ability to conceptualise and test the hydrologic and economic impacts of potential development investments and to pinpoint times and places where water can be transferred to higher valued uses. Compensation mechanisms, payment for ecosystem services, water quality trading and the use and reform of taxes and subsidies are some other examples of economic instruments that can be used to achieve higher efficiency and equity in water management.

A wise investment

The growing demand for water and constraints in water availability pose substantial challenges to governments and companies for sustaining economic growth and insulating against risks. Mismanagement of water can constrain growth in countries, communities and companies alike. Smart managers must understand the tradeoffs between different uses of water, especially in places where supply is scarce and demand is high. They must also grapple with moving targets, as human and environment needs for water evolve over time and space, as does the availability of water. Decision makers from governments and businesses can benefit greatly by understanding how economic tools, incentives and approaches can facilitate the optimization of efficiency, equity and generated values from the use of water resources. Finding a good water economist may be the shrewdest move they can make to safeguard their future growth.