Syndicate content

water supply

New directions in the economics of agricultural water conservation

Susanne M. Scheierling's picture

A challenging area in agricultural water management is the assessment of policy and investment options in irrigated agriculture for conserving water and adapting to increasing water scarcity, in particular when the linkages to groundwater resources and their management are to be considered and incorporated. 

However, this is an increasingly important area of research for a number of reasons.  First, irrigated agriculture accounts for about 70% of global freshwater withdrawals, and is a major contributing factor to the water scarcity situation in many countries.  Second, with almost a quarter of freshwater withdrawals for irrigated agriculture being made up of groundwater supplies—corresponding to 70% of total groundwater withdrawals—, agricultural water use is also a major contributing factor to aquifer overexploitation.  And, third, surface water and groundwater are closely linked in most parts of the world, with groundwater discharge contributing to the base flow of streams and surface water contributing to groundwater recharge, and these interactions are intensified by human action, in particular water withdrawals for irrigated agriculture.  Even in cases where irrigated agriculture depends mostly on surface water, groundwater impacts therefore need to be accounted for when assessing water conservation efforts (and vice versa).

Delivering water and sanitation services in Niger: challenges and results

Taibou Adamou Maiga's picture

Niger is one of the world’s poorest countries (44.5% of poverty incidence in 2014). The country faces a number of challenges in meeting the national (PROSEHA, the National Program for sustainable development) and global targets to increase access to sanitation and potable water, particularly in rural areas where the access to water is 44.2% and 7% for sanitation (2015 Ministry of Water and Sanitation data).

Overcoming these challenges while satisfying increasing demands for better or expanded service, the government began investigating options that bring in the know-how of the private sector. This has led to a growing domestic private sector provision of services in Niger.

IBNET: Water and sanitation utility costs, charges and performance data at your fingertips

Alexander Danilenko's picture
Turning on the faucet: the water supply system in
Bella Vista, Las Lomas, province of Cocle, Panama.
Photo credit: Gerardo Pesantez / World Bank

Ask your child: “Where does our water come from?” And many of them might roll their eyes at being asked such a silly question, and tell you: “Water comes from the tap.”

But how? What is the name of the company that provides the service to you? How much does your water service cost? Is it expensive? Where does your wastewater go? Is it treated prior to discharge? How many people get water from the utility in your town? 

You can find answers to these and many other questions on our global website www.ib-net.org. Go to its performance database or its separate tariff database and get your answers! You can be one of nearly 8,000 people that visit the site each month to access a set of standard reports for a range of comparisons, benchmarking and assessments for more than 5,000 water utilities from 150 countries.

War and Peace and Water

Laura Tuck's picture

This post by Laura Tuck originally appeared on Project Syndicate’s website on May 4, 2016.



Today, actual wars between countries over water resources are uncommon, owing to improved dialogue and cross-border cooperation. But, within countries, competition for scarce water is becoming a more common source of instability and conflict, especially as climate change increases the severity and frequency of extreme weather events. As we detail in our new report “High and Dry: Climate Change, Water and the Economy,” limited and erratic water availability reduces economic growth, induces migration, and ignites civil conflict, which fuels further potentially destabilizing migration.

New approaches in water resource economics

Susanne M. Scheierling's picture
In many parts of the world, changing demand and supply patterns are contributing to an increasing physical scarcity and competition for water resources. Historically, new demands have been met by developing additional supplies—with the incremental cost of water remaining relatively constant over time due to the ready availability of water development project sites to meet growing demands. As the water economy moves from an expansionary to a mature phase, incremental costs are sharply rising, and interdependencies among users and uses are greatly increasing. With this move, the issues to be addressed by water economists tend to become more pressing, broader and more complex. While in the expansionary phase structural or engineering approaches to water management tend to be the main focus, in a maturing water economy nonstructural or institutional options for solving water problems receive increasing attention. In particular, resource allocation and valuation issues move to the forefront of economic inquiry.

World Water Day: Transforming lives through better water and jobs

Jennifer J. Sara's picture

The largest sphere represents
all of Earth's water. The next
smallest sphere represents the world's
liquid fresh water. The smallest
one represents fresh surface water
in all the lakes and rivers on the planet.
Source: US Geological Survey

Water covers 70% of Earth’s surface, but if you live in Sana’a, Sao Paolo, California, or the many other areas where drought or chronic water scarcity has affected daily life, you know that abundance can be relative.

This image from the US Geological Survey shows that only a tiny fraction of Earth’s water is the accessible freshwater we need to live, grow food, sustain the environment, and power our cities and jobs.

Growing cities and populations and a changing climate are placing unprecedented pressures on water. According to the World Economic Forum, water crises are among the top risks to global economic growth. For at least 650 million people, even the water they are able to find is unsafe.

But this also offers an opportunity to provide safer water and better manage our water resources for a more resilient future.

This year, #worldwaterday focuses on the connection between water and jobs, and these connections primarily fall under two categories: productivity and sustainability.

What can Chinese cities learn from Singapore?

Wanli Fang's picture
One of Singapore’s latest redevelopment projects included the construction of a freshwater reservoir. Photo: 10 FACE/Shutterstock

Last week, I had the opportunity to attend the Singapore Urban Week along with other colleagues from the World Bank Beijing office, as well as delegates from China’s national government and participating cities. For all of us, this trip to Singapore was an eye-opening experience that highlighted the essential role of integrated urban planning in building sustainable cities, and provided practical solutions that can be readily adapted to help achieve each city’s own development vision. A couple of key lessons learned:

Putting people at the center of development strategies

This is only possible when planners always keep in mind people’s daily experience of urban space and invite them as part of decision-making process through citizen engagement.

For instance, in many cities, public transit has been perceived as a low-end, unattractive option of travel, causing ridership to stagnate despite severe traffic congestion. But in Singapore, public transit accounts for 2/3 of the total travel modal share in 2014. Moving around the city by metro is comfortable and efficient because transfers between different modes and lines are easy, with clear signage of directions, air-conditioned connecting corridors, and considerate spatial designs and facilities for the elderly and physically-challenged users. In addition, metro stations are co-located with major retail and commercial activities and other urban amenities, significantly reducing last-mile connectivity issues.

Where water and climate change meet

Water Communications's picture

This week, the 2015 Paris Climate Conference, or COP21, will gather countries that want to take action for the climate. A central topic of these discussions will focus on the intersection of water and climate change.

Combating climate change is everyone’s business. Reducing emissions and investing in renewable energy, improving city planning and building design standards, developing more efficient transportation, and reducing deforestation (among others) all play key roles in mitigating the effects of climate change. At the same time, countries, and industries, will also need to adapt to changes in the climate as they unfold. Since climate change will significantly increase the variability of rainfall, different parts of the world will become more vulnerable to floods or droughts. 

“Water scarcity and variability pose significant risks to all economic activities, including food and energy production, manufacturing and infrastructure development,“ said Laura Tuck, World Bank Group Vice President for Sustainable Development during a recent press conference at COP21. “Poor water management can exacerbate the effects of climate change on economic growth, but if water is managed well it can go a long way to neutralizing the negative impacts.”

5 trends in public-private partnerships in water supply and sanitation

Victoria Rigby Delmon's picture

A lot has been happening in Public-Private Partnerships (PPPs) in the water supply and sanitation sector over the last few years, contrary to some misperceptions. Today’s market is radically different from the 1990s (dominated by the large concession model and appetite of private investors to finance projects) or the 2000s (contract terminations and nervousness about benefits that PPP could bring in the water supply and sanitation sector).

Developing countries, facing the challenges of sustainability and financial viability due to the inescapable realities of poor water supply and sanitation services and constrained budgets, are looking at PPPs as an option worth considering to help performance or to develop new sources.  Applying lessons learned from the past, with a better understanding of what PPPs in water can and cannot bring, water PPPs are being used increasingly by public utilities in a more focused way, to manage a specific subset of activities or challenges, such as increasing energy efficiency and water availability through non-revenue water management, or development of a new water source.  The focus is on performance based contracting, with payments against outputs. 

Moving toward universal, quality water and sanitation services

Junaid Kamal Ahmad's picture

The World Bank at World Water Week 2015

Access to sanitation lags behind access to water. Quality of service is poor, with intermittent supplies, continuing environmental degradation, and financially weak service providers. Moreover, future water availability is not guaranteed. Uncertainty about water resources will most profoundly affect poor populations, who often live in disaster-prone areas such as overcrowded settlements and low-lying deltas. Water variability will also strongly impact providers’ ability to maintain adequate quality and quantity of services.

There is no universal solution to these challenges, but the World Bank sees them under three broad areas: governance, finance, and capacity.


Pages