Technical ReportPDF Available

Global-Water-Crisis-The-Facts

Authors:
  • United Nations Environment Programme

Abstract

Water is a foundation of life and livelihoods and is key to sustainable development. Successful water management will serve as a foundation for the achievement of many of the 17 Sustainable Development Goals (SDGs), as well as for SDG 6 - which is to ‘Ensure availability and sustainable management of water and sanitation for all’. Despite this, water is becoming a pressing societal and geopolitical issue – in some regions, it is already of critical national concern. ‘Business as usual’ will mean the world will miss water-related SDGs by a wide margin; up to 40% of the world’s population will be living in seriously water-stressed areas by 2035; and the ability of ecosystems to provide freshwater supplies will become increasingly compromised. 60% of fresh water comes from river basins that cross national borders. Transboundary water agreements need to be robust enough to deal with increasingly uncertain environmental and climatic conditions, and the social and demographic changes that will raise global population to 9.7 billion by 2050 and double the number of people who live in urban areas. Different conceptualisations of water can and have led to conflict. The perception of water as a human right and a common public and environmental good is often opposed by the view of water as a commodity that needs to be priced to ensure efficient and sustainable use. Not only nations but provinces and communities will need to align water perspectives to allow for peaceful and effective integrated water resource management and sustainable use. Effective management will mean tackling neglected issues such as water wastage in current systems, which has been estimated to be up to 30%; common institutional dysfunction, unethical practices, poor accountability, and corruption in the water sectors of many countries. This report highlights looming water crises from 6 inter-related contexts: water scarcity and insecurity, waterrelated disasters, water, sanitation and health (WASH) crisis, water infrastructure deterioration and destruction, unsustainable development, and ecosystem degradation. UN agencies, governments and civil societies have made clear that radical new approaches to water are needed to reverse these sobering water trends. Only by facing these crises in an intelligent and cohesive way will water continue to support life, development and biodiversity for our children and our future Guppy, L., Anderson, K., Mehta, P., Nagabhatla, N. and Qadir, M. 2017. Water Crisis Report. United Nations University Institute for Water, Environment and Health, Hamilton, Canada
UNU-INWEH
GLOBAL WATER CRISIS:
THE FACTS
UNU-INWEH is supported by the Government
of Canada through Global Affairs Canada.
© United Nations University
Institute for Water, Environment and Health
Authorship: Lisa Guppy and Kelsey Anderson
Contributing Authors: Mehta, P., Nagabhatla, N. and
Qadir, M.
Suggested Citation: Guppy, L., Anderson, K., 2017. Water
Crisis Report. United Nations University Institute for
Water, Environment and Health, Hamilton, Canada.
Cover image: Pixabay.com
Design: Kelsey Anderson (UNU-INWEH)
Download at: http://inweh.unu.edu
ISBN: 978-92-808-6083-2
UNU-INWEH
Executive Summary
Water is a foundation of life and livelihoods, and is key to sustainable development. Successful water manage-
ment will serve as a foundation for the achievement of many ofthe 17 Sustainable Development Goals (SDGs),
as well as for SDG 6 - which is to ‘Ensure availability and sustainable management of water and sanitation for all’.
Despite this, water is becoming a pressing societal and geopolitical issue – in some regions, it is already of
critical national concern. ‘Business as usual’ will mean the world will miss water-related SDGs by a wide margin;
up to 40% of the world’s population will be living in seriously water-stressed areas by 2035; and the ability of
ecosystems to provide fresh water supplies will become increasingly compromised.
60% of fresh water comes from river basins that cross national borders. Transboundary water agreements need to
be robust enough to deal with increasingly uncertain environmental and climatic conditions, and the social and
demographic changes that will raise global population to 9.7 billion by 2050 and double the number of people
who live in urban areas.
Different conceptualisations of water can and have led to conflict. The perception of water as a human right and
a common public and environmental good is often opposed by the view of water as a commodity that needs
to be priced to ensure efficient and sustainable use. Not only nations but provinces and communities will need
to align water perspectives to allow for peaceful and effective integrated water resource management and
sustainable use.
Effective management will mean tackling neglected issues such as water wastage in current systems, which has
been estimated to be up to 30%; common institutional dysfunction, unethical practices, poor accountability, and
corruption in the water sectors of many countries.
This report highlights looming water crises from 6 inter-related contexts: water scarcity and insecurity, water-
related disasters, water, sanitation and health (WASH) crisis, water infrastructure deterioration and destruction,
unsustainable development, and ecosystem degradation.
UN agencies, governments and civil societies have made clear that radical new approaches to water are needed
to reverse these sobering water trends. Only by facing these crises in an intelligent and cohesive way will water
continue to support life, development and biodiversity for our children and our future.
1
UNU-INWEH
or more than 3 times the current level of capital investment is needed to achieve the Sustainable
Development Goal 6 targets on water supply, sanitation and hygiene (6.1 and 6.2). The amount of
money needed to meet the other targets of the “water goal” is currently unknown.
US$114 billion per year
12.6 million
deaths
112 million
people were affected by
floods 2005-2015
40% gap
between water demand
and water available
by 2030
30%
of global water
abstraction is lost through
leakage
80%
or more wastewater
returns to the environment
without adequate
treatment
were attributable to the
environment globally in 2012
people now use a source
of drinking water
contaminated by faeces
1.8 billion
2
UNU-INWEH
Water scarcity and insecurity
The notion that water is plentiful – it covers 70% of the planet – is false, as only 2.5% of all
water is freshwater. This limited resource will need to support a projected population of
9.7 billion in 2050; and by that date, an estimated 3.9 billion – or over 40% of the world’s
population - will live in severely water-stressed river basins².
It is not just population that is pressuring water resources. Excessive use is also
evident: the global population tripled in the 20th century, but the use of water increased
six-fold³. Between now and 2050, water demands are expected to increase by 400% from
manufacturing, and by 130% from household use.
As water availability decreases, competition for access to this limited resource will increase. 60% of all
surface fresh water comes from internationally shared river basins and there are an estimated 592 transboundary
aquifers. Continuing cooperation and coordination between nations is crucial to ensuring water is available for
human, economic and environmental needs. Although hundreds of international water agreements have been
signed over time, how countries will cooperatively manage growing resource pressures so that they do not lead
to more conflicts over water is not often clear.
Water insecurity can be exacerbated by drought. More people are affected by drought than any other disaster
type. In 2016, 411 million people in total were affected by disasters and 94% of those were drought affected.
Droughts are also the costliest disasters, with significant impacts on agriculture in particular; droughts cause an
average US$6–8 billion worth of losses in agriculture in the USA annually. In China, drought has resulted in an
annual grain production loss of more than 27 million tons over the last two decades; and from the 1950s to the
beginning of this century, the annual average crop area suffering from drought has expanded from 11.6 million
hectares to 25.1 million hectares, an increase of 116%.
If water were secured for irrigated agriculture, the potential global welfare gain for reduced risk in 2010
would have been US$94 billion. Findings also show that enhanced water security can help stabilise food crop
production and prices. In a water secure scenario, the probability of global wheat production falling below 650
million tons per year is reduced from 83% to 38%¹⁰.
There has been a
drop
in globally
available fresh
water per capita
since 1960¹¹
55%
By 2030,
global demand for
water is expected
to grow by
50%¹²
Water scarcity currently
affects more than
40%
of the
global
population¹³
By 2050, an additional
2.3 billion
people can be expected to be living in
areas with severe waterstress, especially
in North and South Africa and South and
Central Asia¹⁴
Worldwide, the total cost of water
insecurity to the global economy is
estimated at
US$500 billion
annually. Including environmental
impacts, this figure may rise to 1%
of global gross domestic product
(GDP)¹⁹
Agriculture accounts for
of all water
withdrawals
globally and for over
in the
majority of Least
Developed Countries
(LDCs)...¹⁵
and
more food will be
needed by 2050¹⁶
Water scarcity, exacerbated by climate
change, could cost some regions up to
6% of their GDP
¹⁷
The 5th assessment of the Intergovernmental Panel on
Climate Change (IPCC) projects that for each
degree of global warming, approximately 7%
of the global population will be exposed to a
decrease of renewable
water resources of at least 20%¹⁸
70%
90%
70%
40% gap
between water demand
and water available
by 2030¹
3
UNU-INWEH
Water-related disasters
It is vital to protect investments in water-related infrastructure from shocks and
stresses. In 2009, the World Bank estimated that by 2030, around half the Bank’s
water sector portfolio – which was then US$8.8 billion committed and US$11.3 billion
in pipeline – would be at high to medium risk of exposure to climate change impacts²¹.
In addition, hydrologic hazards are leading to significant deaths, displacements and
injuries. Up to 90% of all disasters are water-related, and over the last two decades,
floods have been the most frequent global natural disaster²²; in 2016, 50% of all
recorded events were related to flooding. The total value of all assets that are at risk from
flooding by 2050 is predicted to be US$45 trillion: a rise of over 340% from 2010²³.
Between 1970 and 2010 the world’s population increased by 87%, from 3.7 billion to 6.9 billion. During the same
period, the annual average population exposed to flood increased by 112% - from 33.3 to 70.4 million per year²⁴.
By 2050, rising populations in flood-prone lands, climate change, deforestation, loss of wetlands and rising sea
levels can be expected to increase the number of people vulnerable to flood disaster to 2 billion²⁵.
The UN was prompted to release warnings about urban flash floods after hundreds died in Guatemala, the USA
and southern France in 2015 – stating that under a changing climate, intense rainfall and urbanisation have made
these disasters more common in the last two decades²⁶.
Water-related ecosystems can mitigate water-related disasters. Every hectare of mangrove and coastal marsh is
worth up to US$15,161 a year in disaster-related services²⁷, and coastal wetlands helped to avoid more than $625
million in damages from Hurricane Sandy in 2012²⁸. Coral reefs act as wave barriers, and as an example of their
effectiveness in risk reduction, spending US$1 million a year on restoring reefs at the Folkestone Marine Park on
the west coast of Barbados could lower annual storm losses there by US$20 million²⁹.
Despite these risk reduction benefits, water-related ecosystems globally are in decline. In parts of Asia and the
Americas, up to half of all coastal mangrove ecosystems have been degraded or destroyed³⁰.
Water-related disasters account for
70% of all deaths
related to natural disasters³¹
Worldwide flood damage
amounted to over
US$50 billion
in 2013 and is increasing³²
Several studies estimate that by 2050 between
150 and 200 million people
could be displaced as a consequence of phenomena, such as
desertification, sea level rise and increased
extreme weather events³⁴
Floods and landslides have
cost an estimated
US$453,000,000
between 2000 and 2016³⁵
More than
107,000 people
died due to hydrological
disasters (floods and landslides)
between 2000 and 2016³³
112 million
people were affected by
floods 2005-2015²⁰
4
UNU-INWEH
Water, sanitation and health (WASH) crisis
Although progress has been made in supplying drinking water to more
people year on year, 663 million people still lack ‘improved’ drinking
water sources in 2015³⁷ - and for many people, this ‘improved’ water is not
always safe, reliable, affordable or accessible with equity. For example,
around 45 million people in Bangladesh drink water that contains arsenic
concentrations greater than WHO standards allow³⁸.
Sanitation and hygiene have made less progress, with 2.4 billion people
lacking improved sanitation facilities³⁹. Equity in sanitation and hygiene
access is of particular concern. Seven out of ten people without improved
sanitation facilities, and nine out of ten people still practicing open defecation, live in rural areas; and a lack of
these services often disproportionately affect women and girls, who can not only suffer health repercussions but
personal danger when services are not available and not secure. Diarrheal diseases, long associated with poor
water and sanitation, account for 1 in 9 child deaths worldwide, making diarrhea the third leading cause of death
among children under the age of 5⁴⁰. Poor water, sanitation and hygiene are major contributors to neglected
tropical diseases like schistosomiasis, trachoma and intestinal worms, which affect more than 1.5 billion people
every year⁴¹.
It is not only households that lack adequate services: in low and middle income countries (LMICs), workplaces,
schools and health facilities also lack WASH. In a 2015 survey of LMICs, 38% of health facilities did not have an
improved water source, 35% did not have soap and water for handwashing and 19% did not have improved
sanitation⁴². The lack of universal WASH in schools costs an estimated 1863 million days of school attendance
globally⁴³.
The WASH crisis does not only affect low income countries. In Canada, there are approximately five thousand
homes in First Nations communities that lack basic water and sewage services⁴⁴. Compared to other Canadians,
First Nations’ homes are ninety times more likely to be without running water⁴⁵.
If radical change is not affected, universal water, sanitation and hygiene – as described in SDG targets 6.1 and
6.2 - will not be reached. A World Bank report⁴⁶ found that capital investments must increase by approximately 3
times to achieve the water supply, sanitation, and hygiene (WASH) targets globally. Another study has estimated
that WASH efforts will need to exceed current trends by almost four times to achieve SDG 6.1 and 6.2 by 2030⁴⁷.
Unsafe water, poor sanitation
and hygiene cause approximately
3.5 million
deaths worldwide; the latter
estimate represents 25 per cent
of the deaths of children
younger than 14⁴⁸
2.4 billion people
- more than one third
of the global population –
do not use improved
sanitation facilities⁴⁹
One in ten people
has no choice but to
defecate in the open⁵⁰
Globally, approximately
US$260 billion
is lost each year to the effects of poor
sanitation and unsafe water on many
aspects of the economy, but most
significantly on healthcare⁵¹
In India, the time spent looking for a
toilet or finding somewhere to go in
the open costs the economy over
US$10 billion
every year in lost productivity
– 20% of GDP⁵²
1,000 children
die each day due to preventable
water and sanitation-related
diseases⁵³
people now use a source
of drinking water
contaminated by faeces³⁶
1.8 billion
52
UNU-INWEH
Water infrastructure deterioration and destruction
Under the Millennium Development Goals, many populations counted as being
'served' by water supply actually were allocated to systems that had failed. Although
there may be as many as 60,000 new handpumps being constructed in Africa every
year⁵⁶, a 2007 study found 36% of hand pumps across 21 countries in sub-Saharan
Africa were not functional⁵⁷. This represents a loss of between US$1.2 and 1.5 billion in
investments.
The total cost to water utilities worldwide caused by ‘non-revenue water’ – a
combination of physical and commercial losses - has been conservatively estimated
at US$141 billion per year. In developing countries, approximately 45 million cubic
meters per day are lost through water infrastructure leakage — enough to serve nearly 200
million people⁵⁸. This problem will only get worse if water infrastructure is not
maintained properly, even for high income countries; for example, the capital
investment needed to maintain aging water infrastructure in the USA will reach an
estimated US$195 billion in 2040, but if current funding trends continue, needs will be
underfunded by US$144 billion⁵⁹.
Until the SDGs began in 2015, there was far less international focus on
infrastructure and processes for wastewater treatment, water recycling, and water
efficiency, with significant negative impacts in many areas. For example, poorly
treated wastewater is used for agriculture in many low income countries, but children (8-12 years) in areas using
wastewater have been shown to have a 75% prevalence rate for gastroenteritis, compared to 13% in areas using
freshwater, bringing a 73% higher health cost per child in areas using wastewater⁶⁰.
The failure of water systems is often considered a governance issue. In the water sector, the fragmentation of
actors and of accountabilities hinders and undermines transparency and economic efficiency and opens doors
for corruption. Institutional dysfunction, unethical practices, opaque decision-making, poor accountability, and
corruption are reportedly common, but difficult to quantify⁶¹.
Water infrastructure that is damaged deliberately can also have tremendous local impacts. For example, one air
strike in December 2016 in Syria cut water supplies for 3.5 million people and, while some pumping was restored
relatively quickly, 1.4 million had continued reduced supply⁶². Since 2011, water and water infrastructure have
been used as a military target in Syria, Ukraine, India, Israel, Yemen, Libya, Afghanistan, Somalia, the Democratic
Republic of Congo, South Sudan, Sudan and Iraq⁶³.
80%
or more wastewater
returns to the environment
without adequate
treatment⁵⁴
In low-income countries, only
8% of industrial and
municipal wastewater
undergoes treatment of any kind⁶⁴
In lower-middle-income countries, only
28%
of wastewater is treated⁶⁵
Globally, it has been estimated that between
5 and 20 million hectares
of land are irrigated with untreated
wastewater⁶⁶
30%
of global water
abstraction is lost through
leakage⁵⁵
6
UNU-INWEH
While the effectiveness of water management varies dramatically
between countries, a rapid scale-up in effort and resources will be
needed for most countries to achieve Sustainable Development
Goal 6 and to support other water-related or water-impacted SDGs.
A 2016 study wrote that “the longer governments take to act, the
harder it will be to deliver on their promises by 2030”, and that
overall, every 3 years of inaction will mean that the amount of effort
needed to succeed will increase exponentially⁶⁸.
Beyond SDG 6 – the ‘water goal’- water is fundamental to life
and livelihoods. The success of SDG 6 will underpin progress in
many other goals, including those for human health, universal
education and urban progress. Water security is fundamental to
poverty alleviation, and water resource management impacts almost
all aspects of economic activity, including food production and security, industry, energy production,
and transport⁶⁹.
However, these human activities often degrade water resources. 2 million tons of human waste are disposed
of in water courses every day⁷⁰; 15–18 billion m³ of freshwater resources are contaminated by fossil fuel
production every year⁷¹; and the food sector contributes 40 and 54% to the production of organic water pollutants
in high-income and low- income countries respectively ⁷². Severe pathogenic pollution affects around one-third
of all rivers, severe organic pollution around one-seventh of all rivers, and severe and moderate salinity pollution
around one-tenth of all river stretches in Latin America, Africa and Asia⁷³.
To move beyond simply ‘ticking off’ sustainability indicators to true sustainability in the water sector, Member
States must consider the full cost of water and the services it provides.
Unsustainable development
Or more than 3 times the current level of
capital investment is needed to achieve
the Sustainable Development Goals on
water supply, sanitation and hygiene
(WASH). the amount of money needed
to meet the other targets of the “water
goal” is currently
US$114 billion per year
Unknown⁶⁷
A 2°C rise in global average temperature could mean additional water-related costs between
US$13.7 billion and $19.2 billion
per year from 2020 to 2050, mostly through water supply and flood management⁷⁴
Regionally, the global limit of ecological
sustainability of water available for
abstraction is reported to have
been exceeded for about
one-third
of the human population.
This will rise to about half of the
human population by 2030⁷⁶
Of the world’s 263 transboundary
basins, more than
60% lack
any type of cooperative
management framework⁷⁷
Wealthier diets cost water:
Producing 1 kg of rice requires around
3,500 L of water,
while 1 kg of beef costs
15,000 L⁷⁵
Wastewater-related emissions of methane and nitrous oxide
could rise by 50% and 25%,
respectively, between 1990 and 2020⁷⁸
7
UNU-INWEH
All freshwater ultimately depends on the
continued, healthy functioning of ecosystems.
Recognising the water cycle as a biophysical
process is essential to achieving sustainable
water management⁸⁰ and securing the ecosystem
services that humans rely on.
The water- related services provided by
tropical forests include the regulation of water
flows, waste treatment and water purification and
erosion prevention; these collectively account for a value of up to US$7,236 per hectare per year – more than
44% of the total value of forests, exceeding the values of carbon storage, food, timber, and recreation and tourism
services combined⁸¹. Despite this, between 1997 and 2011, US$4.3 to US$20.2 trillion per year worth of
ecosystem services were lost due to land use change.
Freshwater ecosystems themselves provide more than US$75 billion in goods and ecosystem services for
people annually; they also sustain a disproportionately large number of species, including a quarter of all known
vertebrates⁸². However, wetlands are being increasingly threatened by a host of problems. Since 1900,
64% of the world’s wetlands have disappeared⁸³. This degradation has been valued at US$20 trillion in lost
ecosystem services annually⁸⁴. According to some estimates the populations of freshwater species declined by 76 %
between 1970 and 2010⁸⁵; Nearly one-third of the world’s amphibians are at risk of extinction and in some
regions, more than 50% of native freshwater fish species are at risk of extinction⁸⁶.
Wetlands are also carbon sinks. Peatlands –lands with peat at the surface- cover only 3% of the Earth’s land
surface, but store nearly double the carbon than all the world’s forests combined, if they are kept wet. An overall
loss of 15% of peatlands has been reported, which translates to a contribution of 5% of all global anthropogenic
carbon dioxide emissions⁸⁷. Almost half (45%) of the peatlands in the Nordic and Baltic States have been drained
and emit almost 80 megatons of carbon dioxide annually – which is 25% of the total carbon dioxide emissions
of these countries⁸⁸.
Ecosystem degradation
12.6 million
deaths were attributable to the
environment globally in 2012⁷⁹
Eutrophication of surface water and
coastal zones is expected to increase
almost everywhere until 2030. Globally,
the number of lakes with harmful algal
blooms will increase by at least
20% until 2050⁹⁰
It is estimated that the number of people living
in environments with high water quality risks
due to excessive biochemical oxygen demand
(BOD) will affect
one fifth
of the global population in 2050, while people
facing risks from excessive nitrogen and
phosphorous will increase to
one third
of the global population over the same period⁸⁹
There has been a
30%
decline in biodiversity
health since 1970⁹²
Between US$4.3 and US$20.2 trillion per year
worth of ecosystem services were lost between
1997 and 2011 due to land use change⁹³
Inefficient use of water for crop
production has caused salinization
of
20%
of the global
irrigated land area⁹¹
THIS FACT >>
8
UNU-INWEH
References
¹ 2030 WRG (2030 World Resources Group), 2009. Charting our Water Future: Economic Frameworks to Inform Decision-making. http://www.
mckinsey.com/business-functions/sustainability-and-resource-productivity/our-insights/charting-our-water-future
² OECD, 2012. Environmental Outlook to 2050: the consequences of inaction. OECD 2012. http://www.oecd.org/env/indicators-modelling-out-
looks/oecd-environmental-outlook-1999155x.htm
³ FAO (Food and Agriculture Organization of the United Nations), 2009. How to Feed the World in 2050. FAO, Rome. http://www.fao.org/wsfs/
forum2050/wsfs-background-documents/wsfs-expert-papers/en/
OECD, 2012. Environmental Outlook to 2050: the consequences of inaction. OECD 2012. http://www.oecd.org/env/indicators-modelling-out-
looks/oecd-environmental-outlook-1999155x.htm
Jacob D. Petersen-Perlman, Jennifer C. Veilleux & Aaron T. Wolf, 2017. International water conflict and cooperation: challenges and opportuni-
ties, Water International, 42(2):105-120. http://www.tandfonline.com/doi/full/10.1080/02508060.2017.1276041
Rieu-Clarke, A., Allan, A. and Hendry, S. 2017: Routledge Handbook of Water Law and Policy https://www.routledge.com/Routledge-Hand-
book-of-Water-Law-and-Policy/Rieu-Clarke-Allan-Hendry/p/book/9781138121201
CRED (Centre for Research on the Epidemiology of Disasters), 2016. Preliminary Data: Human impact of natural disasters. CRED Crunch Issue
45. http://www.cedat.be/publications
Zhang, D., Yan, D., Lu, F., Wang, Y. and Feng, J., 2015. Copula-based risk assessment of drought in Yunnan province, China Natural Hazards
75:2199–2220. http://link.springer.com/article/10.1007/s11069-014-1419-6
Chen, H., Wang, J. and Huang, J., 2014. Policy Support, Social Capital, and Farmers’ Adaptation to Drought in China. Global Environmental
Change 24:193–202. http://www.sciencedirect.com/science/article/pii/S0959378013002173
¹⁰ Sadoff, C. W., Hall, J. W., Grey, D., Aerts, J. C. J. H., Ait-Kadi, M., Brown, C., Cox, A., Dadson, S., Garrick, D., Kelman, J., McCornick, P., Ringler,
C., Rosegrant, M., Whittington, D. and Wiberg, D., 2015. Securing Water, Sustaining Growth: Report of the GWP/OECD Task Force on Water
Security and Sustainable Growth. University of Oxford, Oxford UK. http://www.water.ox.ac.uk/wp-content/uploads/2015/04/SCHOOL-OF-GEOG-
RAPHY-SECURING-WATER-SUSTAINING-GROWTH-DOWNLOADABLE.pdf
¹¹ Calculated from FAO AQUASTAT (http://www.fao.org/nr/water/aquastat/main/index.stm) using Renewable internal freshwater resources per
capita (cubic meters)
¹² WWAP (World Water Assessment Programme), 2012. The United Nations World Water Development Report 4: Managing Water Under Uncer-
tainty and Risk. UNESCO, Paris. http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/wwdr/wwdr4-2012/
¹³ United Nations, (n.d.) Water. http://www.un.org/en/sections/issues-depth/water/
¹⁴ OECD, 2012. Environmental Outlook to 2050: The Consequences of Inaction, OECD Publishing, Paris. http://www.oecd.org/env/indicators-
modelling-outlooks/oecd-environmental-outlook-1999155x.htm
¹⁵ FAO (Food and Agriculture Organization of the United Nations), 2011. The State of the World’s Land and Water Resources for Food and Agri-
culture (SOLAW) – Managing systems at risk. FAO, Rome, and Earthscan, London. http://www.fao.org/docrep/017/i1688e/i1688e00.htm
¹⁶ FAO (Food and Agriculture Organization of the United Nations), 2009. How to Feed the World in 2050. FAO, Rome. http://www.fao.org/wsfs/
forum2050/wsfs-background-documents/wsfs-expert-papers/en/
¹⁷ World Bank Group, 2016. High and Dry: Climate Change, Water, and the Economy. World Bank, Washington DC. http://www.worldbank.org/
en/topic/water/publication/high-and-dry-climate-change-water-and-the-economy
¹⁸ Jiménez Cisneros, B.E., T. Oki, N.W. Arnell, G. Benito, J.G. Cogley, P. Döll, T. Jiang, and S.S. Mwakalila, 2014:Freshwater resources. In: Climate
Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assess-
ment Report of the Intergovernmental Panel on Climate Change [Field, C.B., V.R. Barros, D.J. Dokken, K.J. Mach, M.D. Mastrandrea, T.E. Bilir, M.
Chatterjee, K.L. Ebi, Y.O. Estrada, R.C. Genova, B. Girma, E.S. Kissel, A.N. Levy, S. MacCracken, P.R. Mastrandrea, and L.L. White (eds.)]. Cam-
bridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 229-269. https://www.ipcc.ch/pdf/assessment-report/ar5/wg2/
WGIIAR5-Chap3_FINAL.pdf
¹⁹ WWAP (United Nations World Water Assessment Programme), 2016. The United Nations World Water Development Report 2016: Water and
Jobs. Paris, UNESCO. http://unesdoc.unesco.org/images/0024/002439/243938e.pdf
²⁰ Calculated from EM-DAT: The International Disasters Database. http://www.emdat.be/
²¹ Vahid Alavian, V., Qaddumi, H., Dickson, E., Diez, S., Danilenko, A., Hirji, R., Puz, G., Pizarro, C., Jacobsen, M., Blakespoor, B., 2009. Water and
Climate Change: Understanding the Risks and Making Climate-smart Investment Decisions. The World Bank, New York. http://siteresources.
worldbank.org/EXTNTFPSI/Resources/DPWaterClimateChangeweblarge.pdf
²² CRED (Centre for Research on the Epidemiology of Disasters), 2013. Disaster Data: A balanced perspective, CRED Crunch Issue 32. http://www.
cedat.be/publications
²³ OECD, 2012. Environmental Outlook to 2050: the consequences of inaction. OECD Publishing, Paris. http://www.oecd.org/env/indicators-mod-
elling-outlooks/oecd-environmental-outlook-1999155x.htm
²⁴ UNISDR (UN Office for Disaster Risk Reduction), 2011. Global Assessment Report on Disaster Risk Reduction. UNISDR, Geneva. https://www.
unisdr.org/we/inform/publications/19846
9
UNU-INWEH
²⁵ UNU (United Nations University), 2004. Two Billion People Vulnerable to Floods by 2050: Number Expected to Double or More in Two Genera-
tions. News Release. UNU, Tokyo. https://www.sciencedaily.com/releases/2004/06/040614081820.htm
²⁶ UNISDR (UN Office for Disaster Risk Reduction), 2015. Flash floods are a major global threat says UN. News release, UNISDR, Geneva. https://
www.unisdr.org/archive/46061
²⁷ UNISDR (United Nations Disaster Risk Reduction Office), 2017. Five Wetlands That Help us Cope with Extreme Weather Events. http://www.
worldwetlandsday.org/documents/10184/164097/WWD17_Handout2_engl2_HR2_+desktop+print+.pdf/4ae20093-86f4-4cd9-a872-c664cb167aca
²⁸ UNISDR (United Nations Disaster Risk Reduction Office), 2017. Wetlands: a natural safeguard against disasters. http://www.worldwetlandsday.
org/documents/10184/164097/WWD17_Handout_engl1_HR2_desktop+print+.pdf/d8e8728b-3ed7-4686-a174-9ebe02d047bd
²⁹ UNISDR (United Nations Disaster Risk Reduction Office), 2017. Five Wetlands That Help us Cope with Extreme Weather Events. http://www.
worldwetlandsday.org/documents/10184/164097/WWD17_Handout2_engl2_HR2_+desktop+print+.pdf/4ae20093-86f4-4cd9-a872-c664cb167aca
³⁰ Preventionweb, 2017. Disaster Risk and Environmental Degradation. http://www.preventionweb.net/risk/environmental-degradation
³¹ United Nations, 2016. Sustainable Development Goals. Goal 6: Ensure access to water and sanitation for all, Facts and figures. http://www.
un.org/sustainabledevelopment/water-and-sanitation/
³² Guha-Sapir, D., Hoyois, P. and Below, R., 2014. Annual Disaster Statistical Review 2013: The Numbers and Trends. Centre for Research on the
Epidemiology of Disasters (CRED), Institute of Health and Society (IRSS), Université Catholique de Louvain, Brussels. www.cred.be/sites/default/
files/ADSR_2013.pdf
³³ Calculated from the International Disaster Database (EM-DAT) from Centre for Research on the Epidemiology of Disasters (CRED). http://www.
emdat.be/
³⁴ Scheffran, J., Brzoska, M., Brauch, H. G., Link, P. M. and Schilling, J. (eds), 2012. Climate Change, Human Security and Violent Conflict. Springer,
Berlin/New York. http://www.sciencedirect.com/science/article/pii/S096262980700039X
³⁵ Calculated from the International Disaster Database (EM-DAT) from Centre for Research on the Epidemiology of Disasters (CRED). http://www.
emdat.be/
³⁶ Bain, R., Cronk, R., Hossain, R., Bonjour, S., Onda, K., Wright, J., Yang, H., Slaymaker, T., Hunter, P., Pruss-Ustun, A., Bartram, J., 2014. Global
assessment of exposure to faecal contamination through drinking water based on a systematic review. Tropical Medicine and International Health
19(8) pp 917–927. Wiley. http://onlinelibrary.wiley.com/doi/10.1111/tmi.12334/abstract
³⁷ Guha-Sapir, D., Hoyois, P. and Below, R., 2014. Annual Disaster Statistical Review 2013: The Numbers and Trends. Centre for Research on the
Epidemiology of Disasters (CRED), Institute of Health and Society (IRSS), Université Catholique de Louvain, Brussels. www.cred.be/sites/default/
files/ADSR_2013.pdf
³⁸ Flanagan, SV, Johnston RB and Zheng Y., 2012. Arsenic in tube well water in Bangladesh: health and economic impacts and implications for
arsenic mitigation. Bull World Health Organ 90:839-846. https://www.scienceopen.com/document?vid=ea6da984-9275-45e6-8c85-efd78fb8adba
³⁹ JMP (Joint Monitoring Programme of Water Supply and Sanitation, UNICEF and WHO), 2015. Progress on Sanitation and Drinking Water: 2015
Update and MDG Assessment. WHO, Geneva. https://www.unicef.org/publications/index_82419.html
⁴⁰ CDC (Centers for Disease Control and Prevention), 2017. Diarrhea: Common Illness, Global Killer. https://www.cdc.gov/healthywater/global/
diarrhea-burden.html
⁴¹JMP (Joint Monitoring Programme of Water Supply and Sanitation, UNICEF and WHO), 2015. Progress on Sanitation and Drinking Water: 2015
Update and MDG Assessment. WHO, Geneva. https://www.unicef.org/publications/index_82419.html
⁴² WHO and UNICEF, 2015. Water, Sanitation and Hygiene in Health Care Facilities: status in low and middle income countries and a way forward.
WHO, Geneva. http://www.who.int/water_sanitation_health/publications/wash-health-care-facilities/en/
⁴³ WHO (World Health Organization), 2004. Water, sanitation and hygiene links to health. Facts and figures. WHO, Geneva. http://www.who.int/
water_sanitation_health/publications/facts2004/en/
⁴⁴ UN Committee on Economic, Social and Cultural Rights (CESCR), 2004, Implementation of the International Covenant on Economic, Social and
Cultural Rights: Addendum to the Fourth Periodic Reports Submitted by State Parties, Canada, UNESCOR, 19th Sess, UN Doc E/C.12/4/Add.15
at 84 [Implementation of ICESCR]. http://www.refworld.org/publisher,CESCR,STATEPARTIESREP,,,,0.html
⁴⁵ United Nations, 2009. The State of the World’s Indigenous Peoples, STT/ESA/328. UN Department of Economic and Social Affairs, Division of
Social Policy and Development, Secretariat of the Permanent Forum on Indigenous Issues. United Nations, New York. http://www.un.org/esa/
socdev/unpfii/documents/SOWIP/en/SOWIP_web.pdf
⁴⁶ Hutton, G. & Varughese, M., 2016. The Costs of Meeting the 2030 Sustainable Development Goal Targets on Drinking Water, Sanitation, and
Hygiene, Technical Paper 103171, Water and Sanitation Program. http://www.worldbank.org/en/topic/water/publication/the-costs-of-meeting-
the-2030-sustainable-development-goal-targets-on-drinking-water-sanitation-and-hygiene
⁴⁷ Nicolai, S., Hoy, C., Berliner, T., and Aedy, T., 2015. Projecting progress: Reaching the SDGs by 2030. Flagship Report, Overseas Development
Institute, London. https://www.odi.org/publications/9895-projecting-progress-reaching-sdgs-2030
⁴⁸ UNEP (United Nations Environment Programme), 2016. Healthy Environment, Healthy People. Thematic Report for the Ministerial policy review
session of the Second Session of the United Nations Environment Assembly of the United Nations Environment Programme, Nairobi, 23–27 May
2016. http://wedocs.unep.org/bitstream/handle/20.500.11822/17602/K1602727%20INF%205%20Eng.pdf?sequence=1&isAllowed=y
10
UNU-INWEH
⁴⁹ JMP (Joint Monitoring Programme of Water Supply and Sanitation, UNICEF and WHO), 2015. Progress on Sanitation and Drinking Water: 2015
Update and MDG Assessment. WHO, Geneva. https://www.unicef.org/publications/index_82419.html
⁵⁰JMP (Joint Monitoring Programme of Water Supply and Sanitation, UNICEF and WHO), 2015. Progress on Sanitation and Drinking Water: 2015
Update and MDG Assessment. WHO, Geneva. https://www.unicef.org/publications/index_82419.html
⁵¹ Hutton, G., (2012). Global costs and benefits of drinking-water supply and sanitation interventions to reach the MDG target and universal cover-
age, p5. WHO, Geneva. http://www.worldbank.org/en/topic/water/publication/the-costs-of-meeting-the-2030-sustainable-development-goal-
targets-on-drinking-water-sanitation-and-hygiene
⁵² Tyagi, A., 2012. Inadequate sanitation costs India Rs.2.4 trillion (US$53.8 billion). Economic impacts of inadequate sanitation in India; Water and
sanitation program. World Bank, Washington, DC. http://documents.worldbank.org/curated/en/285381468260122313/Inadequate-sanitation-
costs-India-Rs-2-4-trillion-US-53-8-billion
⁵³ United Nations, 2016. Sustainable Development Goals. Goal 6: Ensure access to water and sanitation for all, facts and figures. http://www.
un.org/sustainabledevelopment/water-and-sanitation/
⁵⁴ WWAP (World Water Assessment Programme), 2012.The United Nations World Water Development Report 4: Managing Water under Uncer-
tainty and Risk. UNESCO, Paris. http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/wwdr/wwdr4-2012/
⁵⁵ Kingdom, B., Liemberger, R. and Marin, P., 2006. The Challenge of Reducing Non-revenue Water (NRW) in Developing Countries - How the
Private Sector can Help: A Look at Performance-based Service Contracting. Water Supply and Sanitation Sector Board Discussion Paper Series
No. 8. Washington, DC, The World Bank. https://openknowledge.worldbank.org/handle/10986/17238
⁵⁶ Fisher, M., Shields, K., Chan, T., Christenson, E., Cronk, R., Leker, H., Samani, D., Apoya, P., Lutz, A., Bartram, J., 2015. Understanding hand-
pump sustainability: Determinants of rural water source functionality in the Greater Afram Plains region of Ghana. Water Resources Research 51
pp 8431-8499. http://onlinelibrary.wiley.com/doi/10.1002/2014WR016770/abstract
⁵⁷ RWSN (Rural Water Supply Network), 2009. Triple S Briefing: Providing Reliable Rural Water Services That Last. http://reliefweb.int/report/
uganda/triple-s-briefing-providing-reliable-rural-water-services-last
⁵⁸ Kingdom, B., Liemberger, R. and Marin, P., 2006. The Challenge of Reducing Non-revenue Water (NRW) in Developing Countries - How the Pri-
vate Sector can Help: A Look at Performance-based Service Contracting. Water Supply and Sanitation Sector Board Discussion Paper Series No.
8. The World Bank, Washington DC. http://documents.worldbank.org/curated/en/385761468330326484/The-challenge-of-reducing-non-revenue-
water-NRW-in-developing-countries-how-the-private-sector-can-help-a-look-at-performance-based-service-contracting
⁵⁹ American Society of Civil Engineers, 2011. Failure to Act: The economic impact of current investment trends in water and waste water treat-
ment infrastructure, Washington DC. http://www.asce.org/water_and_wastewater_report/
⁶⁰ Grangier, C., Qadir, M. and Singh, M., 2012. Health Implications for Children in Wastewater-Irrigated Peri-urban Aleppo, Syria. Water Quality,
Exposure and Health 4(4):187-195. Springer http://link.springer.com/article/10.1007/s12403-012-0078-7
⁶¹ OECD, 2014. Water Integrity Workshop Report, OECD Conference Centre, Paris, France. http://www.oecd.org/cfe/regional-policy/OECD-
Water-Integrity-Workshop-Report.pdf
⁶² Reuters, 2015. ‘U.N. condemns air strike that cut water supplies to Syria's Aleppo’, Tue Dec 1, 2015. http://www.reuters.com/article/us-syria-
crisis-aleppo-water-idUSKBN0TK4F020151201
⁶³ Pacific Institute, 2017. Water Conflict Chronology List. http://www2.worldwater.org/conflict/list/
⁶⁴ Sato, T., Qadir, M., Yamamoto, S., Endo, T. and Zahoor, A., 2013. Global, regional, and country level need for data on wastewater generation,
treatment, and use. Agricultural Water Management, 130, pp. 1–13. http://www.sciencedirect.com/science/article/pii/S0378377413002163
⁶⁵ WWAP (World Water Assessment Programme), 2017. The United Nations World Water Development Report 2017: Wastewater the
Untapped Resource. United Nations Educational, Scientific and Cultural Organization (UNESCO), Paris. http://unesdoc.unesco.org/
images/0024/002471/247153e.pdf
⁶⁶ Drechsel, P., Scott, C. A., Raschid-Sally, L., Redwood, M. and Bahri, A. 2010. Wastewater Irrigation and Health. London/ Ottawa/Colombo,
Earthscan/International Devel-opment Research Centre (IDRC)/International Water Management Institute (IWMI). https://www.idrc.ca/en/book/
wastewater-irrigation-and-health-assessing-and-mitigating-risk-low-income-countries
⁶⁷ Hutton, G., & Varughese, M., 2016. The Costs of Meeting the 2030 Sustainable Development Goals and Targets on Drinking Water, Sanitation,
and Hygiene. World Bank, Water and Sanitation Program, Washington DC. http://www.worldbank.org/en/topic/water/publication/the-costs-of-
meeting-the-2030-sustainable-development-goal-targets-on-drinking-water-sanitation-and-hygiene
⁶⁸ Stuart, E. et al., 2016. Leaving No one Behind: A critical path for the first 1,000 days of the Sustainable Development Goals. Overseas Develop-
ment Institute, London. https://www.odi.org/sites/odi.org.uk/files/resource-documents/10691.pdf
⁶⁹ World Bank, 2009. Water Resources: Managing a Scarce, Shared Resource. http://documents.worldbank.org/curated/en/659671468329099994/
Water-resources-managing-a-scarce-shared-resource
⁷⁰ WWAP (World Water Assessment Programme), 2017. The United Nations World Water Development Report 2017: Wastewater the
Untapped Resource. United Nations Educational, Scientific and Cultural Organization (UNESCO), Paris. http://unesdoc.unesco.org/
images/0024/002471/247153e.pdf
⁷¹ WWAP (World Water Assessment Programme), 2017. The United Nations World Water Development Report World Water Development
Report: Water and Energy. United Nations Educational, Scientific and Cultural Organization (UNESCO), Paris. http://www.unesco.org/new/en/
natural-sciences/environment/water/wwap/wwdr/2014-water-and-energy/
11
UNU-INWEH
⁷² United Nations Environment Programme (UNEP), 2007. Global Environment Outlook 4: Environment for Development. http://www.unep.org/
geo/geo/assessments/global-assessments/global-environment-outlook-4
⁷³ UNEP (United Nations Environment Programme), 2016. A Snapshot of the World’s Water Quality: towards a global assessment. UNEP, Nairobi.
https://uneplive.unep.org/media/docs/assessments/unep_wwqa_report_web.pdf
⁷⁴ World Bank. 2010. Economics of adaptation to climate change - Synthesis report. World Bank, Washington DC. http://www.worldbank.org/en/
news/feature/2011/06/06/economics-adaptation-climate-change
⁷⁵ Hoekstra, A. and Chapagain, A. 2008. The Global Component of Freshwater Demand and Supply: an assessment of virtual water flows be-
tween nations as a result of trade in agricultural and industrial products. Water International, 33 (1), pp 19-32. http://www.tandfonline.com/doi/
abs/10.1080/02508060801927812
⁷⁶ WWAP (World Water Assessment Programme). 2012. The United Nations World Water Development Report 4: Managing Water under Uncer-
tainty and Risk. UNESCO, Paris. http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/wwdr/wwdr4-2012/
⁷⁷ UNEP (United Nations Environment Programme), 2002. The World’s International Freshwater Agreements. UNEP Press, Nairobi. http://www.
transboundarywaters.orst.edu/publications/atlas/
⁷⁸ UNEP (United Nations Environment Programme), 2011. Towards a Green Economy: Pathways to Sustainable Development and Poverty Eradica-
tion. UNEP Press, Nairobi. https://sustainabledevelopment.un.org/index.php?page=view&type=400&nr=126&menu=35
⁷⁹ Prüss-Üstün, A., & Neira, M., 2016. Preventing Disease Through Healthy Environments: a global assessment of the burden of disease from envi-
ronmental risks. World Health Organization, Geneva. http://www.who.int/quantifying_ehimpacts/publications/preventing-disease/en/
⁸⁰ WWAP (World Water Assessment Programme), 2012.The United Nations World Water Development Report 4: Managing Water under Uncer-
tainty and Risk. UNESCO, Paris. http://www.unesco.org/new/en/natural-sciences/environment/water/wwap/wwdr/wwdr4-2012/
⁸¹ TEEB (The Economics of Ecosystems & Biodiversity), 2009. TEEB Climate Issues Update. UNEP Press, Geneva. http://www.teebweb.org/publi-
cation/climate-issues-update/
⁸² Vié, J.-C., Hilton-Taylor, C. and Stuart, S.N. (eds.), 2009. Wildlife in a Changing World – An Analysis of the 2008 IUCN Red List of Threat-
ened Species. IUCN, Gland, Switzerland. https://www.iucn.org/content/wildlife-changing-world-analysis-2008-iucn-red-list-threatened-
species%E2%84%A2
⁸³ Ramsar Wetland Convention, 2016. Wetlands: A global disappearing Act. Fact sheet 3. http://www.ramsar.org/sites/default/files/documents/
library/factsheet3_global_disappearing_act_0.pdf
⁸⁴ Costanza, R., de Groot, R., Sutton, P., van der Ploeg, S., Anderson, S.J., Kubiszewski, I., Farber, S. and Turner, R.K., 2014. Changes in the global
value of ecosystem services. Global Environmental Change, 26:152-158. http://www.sciencedirect.com/science/article/pii/S0959378014000685
⁸⁵ McRae L, Freeman R & Marconi V (2016) 'The Living Planet Index' in: Living Planet Report 2016: Risk and resilience in a new era (ed. Oerlemans
N). WWF International, Gland, Switzerland. http://www.livingplanetindex.org/publications
⁸⁶ Vié, J.-C., Hilton-Taylor, C. and Stuart, S.N. (eds.), 2009. Wildlife in a Changing World – An Analysis of the 2008 IUCN Red List of Threat-
ened Species. IUCN, Gland, Switzerland. https://www.iucn.org/content/wildlife-changing-world-analysis-2008-iucn-red-list-threatened-
species%E2%84%A2
⁸⁷ Ramsar Wetland Convention 2016. Keep Peatlands Wet for a Better Future. Fact sheet 8. http://www.ramsar.org/sites/default/files/documents/
library/fs_8_peatlands_en_v5.pdf
⁸⁸ Norden, 2015. Peatlands, Climate Change Mitigation and Biodiversity Conservation. Nordic Council of Ministers, Denmark. http://www.ramsar.
org/sites/default/files/documents/library/ny_2._korrektur_anp_peatland.pdf
⁸⁹ Veolia and IFPRI (International Food Policy Research Institute), 2015. The Murky Future of Global Water Quality. A White Paper. http://www.ifpri.
org/publication/murky-future-global-water-quality-new-global-study-projects-rapid-deterioration-water
⁹⁰ UNDESA (United Nations Department of Economic and Social Affairs), 2012. Back to our Common Future: Sustainable Development in the
21st Century (SD21) Project. United Nations (UN), New York. https://sustainabledevelopment.un.org/content/documents/UN-DESA_Back_Com-
mon_Future_En.pdf
⁹¹ FAO (Food and Agriculture Organization of the United Nations), 2011. The State of the World's Land and Water Resources for Food and Agri-
culture: Managing systems at risk. London/Rome, Earthscan/FAO. http://www.fao.org/nr/solaw/solaw-home/en/
⁹² WWF (World Wide Fund for Nature), 2012. Living Planet Report 2012: Biodiversity, Biocapacity and Better Choices. Gland, Switzerland, WWF
international. http://wwf.panda.org/about_our_earth/all_publications/living_planet_report_timeline/lpr_2012/
⁹³ Costanza, R., de Groot, R., Sutton, P., van der Ploeg, S., Anderson, S.J., Kubiszewski, I., Farber, S. and Turner, R.K., 2014. Changes in the Global
Value of Ecosystem Services. Global Environmental Change, 26: 152-158. http://www.sciencedirect.com/science/article/pii/S0959378014000685
12
UNU-INWEH
United Nations University Institute for Water, Environment and Health
204 - 175 Longwood Road South, Hamilton, Ontario, Canada, L8P 0A1
Tel: +905 667-5511 Fax: +905 667 5510
... Since a quarter of the world's population currently lacks access to clean water, Sustainable Development Goal 6 (SDG 6) targets will be significantly exceeded in the future if things continue as they are. In countries with severe water shortages, more than 40% of the world's population will live by 2035 (Guppy et al., 2017;Strong & Kuzma, 2020). Significant water shortages caused by the climate will have a significant impact on countries in the mid-latitudes, including North Africa, Southern Texas, China, North Chile, Argentina, and South Africa (Maddocks et al., 2019). ...
... The great majority of Earth's water, which accounts for around 321,000,000 cubic miles or 96.5% of the planet's total volume, is contained in oceans, seas, and bays (Guppy et al., 2017) (Table 16.2). Just about 2.5% of the water on Earth is freshwater. ...
... Just about 2.5% of the water on Earth is freshwater. More than two-thirds of the freshwater on Earth is contained in ice caps and glaciers, which have a volume of about 5,773,000 cubic miles (Guppy et al., 2017). The largest freshwater reservoir in the world outside of the polar regions is found on the Tibetan plateau. ...
... This was the case, for example, in the Australian Millennium Drought (Van Dijk et al. 2013), Flint Michigan water pollution (Butler et al. 2016), and the prospect of Day Zero in Cape Town (Taing et al., 2019;Wolski, 2018). Up to 66% of the global population lives under conditions of severe water scarcity for at least one month of the year (Mekonnen and Hoekstra 2016) and 40% of the world's population will be living in seriously water-stressed areas by 2035 (Guppy and Anderson 2017;Addams et al. 2009). There has been a 55% drop globally in available freshwater per capita (Guppy and Anderson, 2017). ...
... Up to 66% of the global population lives under conditions of severe water scarcity for at least one month of the year (Mekonnen and Hoekstra 2016) and 40% of the world's population will be living in seriously water-stressed areas by 2035 (Guppy and Anderson 2017;Addams et al. 2009). There has been a 55% drop globally in available freshwater per capita (Guppy and Anderson, 2017). And yet, global water demand is expected to grow by 50% by 2030. ...
Chapter
Full-text available
In the context of global warming, poverty, and inequality, informal settlements in the Global South present a unique challenge. Transforming informal settlements into just and sustainable neighborhoods involves working with many dynamic parts and interactive consequences in multi-stakeholder processes. Water interlinks formal and informal areas, cities, and their hinterlands. The omnipresence of water highlights the mutual coupling of humans and nature. This chapter presents a Water-Sensitive Design approach for informal settlement upgrading through which diverse actors can get to see beyond their differences so as to plan and work for people-centered neighborhoods in which livelihoods are enhanced and nature protected. An EcoDistricts framework is used to illustrate a set of evidence-based upgrading priorities and objectives. And, drawing from a right-based approach from South Africa, a set of five steps for transitioning from aspirational objectives to on-the-ground implementation is highlighted.
... Water scarcity is increasingly emerging as a pressing societal and geopolitical challenge. It is anticipated that by 2035, ecosystems will undergo a substantial decline in their capacity to provide adequate freshwater (Guppy et al., 2017); particularly the agricultural sector that heavily relies on water and consumes a significant portion of global freshwater resources. Treated wastewater (TWW) is increasingly recognized as a viable solution in regions facing water shortages, including low-income nations and arid or semi-arid high-income nations (Al-Hazmi et al., 2023). ...
Article
Full-text available
The use of treated wastewater (TWW) for agricultural irrigation is becoming more popular as a sustainable alternative to freshwater due to increasing water scarcity. While considerable research exists on the effects of TWW on soil microorganisms, its impact on soil nematodes, key indicators of soil health remains unexplored. This study assessed the effects of two years of TWW irrigation on soil nematode communities in abandoned fields cultivated with Lavender, Anise, Olive and Pomegranate trees. Seasonal soil samples were analyzed for nematode abundance, community composition and ecological indices. TWW irrigation modified soil nematode community structure, favoring the dominance of bacterivores (Acrobeloides) while suppressing plant-parasitic nematodes (Pratylenchus, Bitylenchus). Nematode-based indices showed no significant differences between TWW- and freshwater-irrigated soils, indicating stable and resilient communities. Seasonal precipitation levels strongly influenced nematode abundances, highlighting environmental resilience. Plant species did not create ecological niches, probably due to the strong influence of precipitation and soil properties; nevertheless, plant establishment increased nematode diversity over time, with omnivores and predators emerging alongside bacterivores and fungivores, reflecting recovery dynamics. Even though TWW irrigation is considered a type of disturbance, it facilitated soil nematode diversity and maintained ecological stability. Properly treated wastewater serves as a sustainable irrigation method that enhances soil health and biodiversity, rendering it a viable alternative for agricultural systems in degraded and water-scarce areas under changing climatic conditions.
... Water scarcity has also restricted industrial and tourist progress due to limited water use. The ecosystem which yields almost US$ 75 billion of goods and services is also under the threat of increased scarcity of water (Guppy & Anderson, 2017). ...
Conference Paper
Full-text available
The utmost interest of any state is to strength her control over natural resources and maximize security to protect these resources in her national interest. Water is key to economic growth and development. The rising trend of global water demand and declining freshwater availability have created an issue of water scarcity and warned the world. Pakistan, being a South Asian country is also facing the threat of water scarcity. So this study is planned to first assess the status of water scarcity in Pakistan using various well-defined water indices for the year 1972-73 to 2022-23. ARIMA time series model was used to forecast water scarcity in Pakistan. Pakistan which was once water abundant country is now a water scarce country both in terms of physical and social scarcity. The results depict that Pakistan will fall in the category of absolute water scarce countries in near future either in terms of declining per capita freshwater availability, increased withdrawals to availability ratio, high environmental water scarcity or reduced social adaptive capacity. Some effective measures must be taken to address the problem of water scarcity in Pakistan. It is high time regional forces must initiate regional trans-boundary dialogues and cooperative measures to the optimal use of available freshwater to bring peace, prosperity and economic integration in the region.
... In such regions, lack of adequate clean water to meet human drinking water and sanitation needs, is indeed a constraint on human health and productivity. (Guppy et al., 2017) How best to meet the challenges of changing and uncertain future climate, rapidly growing population driving increased social and economic development, globalization, and urbanization requires research in all aspects of water management. This paper identifies the issues facing water managers today, likely impact of newly adopted National Water Policy (NWP) on Urban Water Management (UWM), lacuna in NWP for in regard of UWM, and what measures can be adopted for effective UWM that may be adopted to create a more sustainable and desirable future. ...
... Water scarcity is a worldwide issue. It even affects nations with abundant water resources (Lisa et al. 2017). Nearly 40% of the earth's rural population resides near river basins categorized as water-scarce (Cervantes-Godoy et al. 2014). ...
Article
Full-text available
A proactive policy for tackling the global water crisis involves the application of artificial groundwater recharge (AGR). AGR site selection is a complex challenge, particularly in large study areas. Considerable research attempted to locate AGR sites using field data collection or conventional decision modeling techniques, such as analytic hierarchy process (AHP). However, the present study utilizes machine learning (ML) techniques with geographic information system (GIS) and remote sensing images to develop a high-efficiency AGR map for the United Arab Emirates. In this study, nine thematic layers were considered: precipitation, drainage density, total dissolved solids, groundwater level, geology, geomorphology, lineament density, elevation and distance from residences. The study applied three ML models, namely support vector machine, multilayer perceptron and random forest (RF), to estimate the relative importance of each thematic layer through feature importance analysis. The AHP approach was also used for comparison. The weights for each thematic layer were determined through a literature review and expert opinions. Results showed that the RF model performed best, with an overall prediction accuracy of 99%. The developed AGR maps were categorized according to their suitability for AGR potential, with approximately 10% of the study area categorized as high. The results of the AHP and RF approaches were relatively similar, indicating that the qualitative approach of AHP was validated by the data-driven approach of RF. The present study presents a framework that can be applied in other climate regions with data availability. This framework can also help environmental agencies and practitioners understand the role of ML in AGR site selection. The results also demonstrate the effectiveness of combining GIS, remote sensing and ML techniques to produce high-efficiency AGR maps.
... Currently, different parts of the world, including Iraq, are facing water scarcity. Up to 40% of the world's population will live under severely water-stressed condition by 2035 (Guppy et al., 2017). One of the solutions for food and nutritional security in such regions is the introduction of new staple and minor crops into agricultural production. ...
Article
Foxtail millet ( Setaria spp.) is an ancient cereal crop, having a short cropping cycle. Drought tolerance was assessed in this crop at an early growth stage and the extent of genetic diversity was measured between the foxtail millet genotypes, applying DNA markers. Tolerance of 18 foxtail millet genotypes was studied in vitro under four levels of polyethylene glycol (0, 10, 20 and 30% PEG-6000). PEG-6000 decreased final germination percentage and led to a reduction in shoot and root length with different stress levels. The genotypes ISe 869, ISe 1851 and yellow spike show superiority in stress tolerance for germination and the growth of root and shoot traits. They also clustered together in the biplot diagram and dendrogram of the genotypes based on the morphological traits. Marker polymorphism index (PI) was 80.36% and a total of 132 polymorphic alleles (4.00 alleles/locus) were obtained from 33 polymorphic primers. Polymorphic information content (0.54–0.83) was highly informative with an average value of 0.67. A dendrogram distributed the genotypes into five distinct clusters based on simple-sequence repeat (SSR) data, independent of their geographical distribution. A relationship was established between the SSR markers and the genotypes ability to tolerate drought stress. The SSR markers used could contribute to conducting DNA profiling of foxtail millet, and facilitating their use in future breeding programmes for drought tolerance in this crop. Based on water-stress experiment, three most tolerant genotypes: ISe 869, ISe 1851 and yellow spike are recommended to be cultivated under drought conditions around the world.
Article
Full-text available
Despite Nigeria’s immense wealth in water resources, the country faces a significant water crisis that is exceptionally difficult to resolve, particularly considering the associated public health and security challenges. This review aims to expound on the complex determinants and the outcomes of the water shortage in Nigeria focusing more on its effects on the general livelihood and stability of Nigerians. Using a systematic approach, this paper reviews water scarcity, the causes of pollution– including urban activities, agrochemical run-offs, and mismanagement – and their negative impacts on health and the environment in Nigeria. A total of 305 studies relating to water pollution and crisis in Nigeria were examined in this study. One more point of the evaluation is that the review outlines the existing barriers preventing the all-inclusive availability of clean water, for example, the lack of appropriate infrastructure and inefficient resource management. The review emphasizes improving water treatment facilities, advancing water management strategies that are sustainable, and tightening certain laws.
Article
Full-text available
Pretreatment of raw feed water is an essential step for proper functioning of a reverse osmosis (RO) desalination plant as it minimizes the risk of membrane fouling. Conventional pretreatment methods have drawbacks, such as the potential of biofouling, chemical consumption, and carryover. Non-conventional membrane-based pretreatment technologies have emerged as promising alternatives. The present review focuses on recent advances in MF, UF, and NF membrane pretreatment techniques that have been shown to be effective in preventing fouling as well as having low energy consumption. This review also highlights the advantages and disadvantages of polymeric and ceramic membranes. Hybrid technologies, which combine the benefits of conventional and non-conventional methods or different membranes, are also discussed as a potential solution for effective pretreatment. The literature that has been analyzed reveals the challenges associated with RO pretreatment, including the high cost of conventional pretreatment systems, the difficulty of controlling biofouling, and the production of large volumes of wastewater. To address these challenges, sustainable hybrid strategies for ceramic membrane-based systems in RO pretreatment are proposed. These strategies include a thorough assessment of the source water, removal of a wide range of impurities, and a combination of methods such as adsorption and carbon dioxide with a low amount of antiscalants. Furthermore, the suggestion of incorporating renewable energy sources such as solar or wind power can help reduce the environmental impact of the system. A pilot study is also recommended to overcome the difficulties in scaling ceramic systems from laboratory to industrial scale. The review also emphasizes the importance of conducting an effective assessment to suggest a treatment for the brine if needed before being discharged to the environment. By following this framework, sustainable, energy-efficient, and effective solutions can be recommended for pretreatment in desalination systems, which can have significant implications for water scarcity and environmental sustainability.
Article
Full-text available
Though awareness of the nature of water conflict and cooperation has improved over time, the likelihood of water conflicts could increase as populations continue to grow and climate change continues to manifest. This article details the nature of water conflict and water cooperation. We discuss how water conflicts can be resolved, how water can be seen as a vehicle for change between states, and future directions that can be taken in transboundary water conflict research.
Article
Full-text available
Yunnan is one of the provinces which had been frequently and heavily affected by drought disasters in China. Recently, large severe droughts struck Yunnan, caused considerable social, economic and ecological losses. A risk assessment of meteorological drought for Yunnan province is provided in this study. Based on the daily meteorological data of 29 stations during 1960–2010, duration and severity as two major drought characteristics, defined by the runs and the composite meteorological drought index, are abstracted from the observed drought events. Three bivariate Archimedean copulas are employed to construct the joint distributions of the drought characteristics. Based on the error analysis and tail dependence coefficient, the Gumbel–Hougaard copula is selected to analyze spatial distributions of the joint return periods of drought. The results indicate that a high risk is observed in the middle parts and the northeast parts of Yunnan province, while a relative lower drought risk is observed in the northwest of Yunnan province. The probabilistic properties can provide useful information for water resources planning and management.
Article
Increasingly severe drought has not only threatened food security but also resulted in massive socio-economic losses. In the face of increasingly serious drought conditions, the question of how to mitigate its impacts through appropriate measures has received great attention. The overall goal of this study is to examine the influence of policies and social capital on farmers’ decisions to adopt adaptation measures against drought. The study is based on a large-scale household and village survey conducted in six provinces nationwide. The survey results show that 86% of rural households have taken adaptive measures to protect crop production against drought, most of which are non-engineering measures. In the case of non-engineering measures, changing agricultural production inputs and adjusting seeding or harvesting dates are two popular options. A multivariate regression analysis reveals that government policy support against drought such as releasing early warning information and post-disaster services, technical assistance, financial and physical supports have significantly improved farmers’ ability to adapt to drought. However, since only 5% of villages benefited from such supports, the government in China still has significant room to implement these assistances. Moreover, having a higher level of social capital in a farm household significantly increases their adaptation capacity against drought. Therefore, the government should pay particular attention to the farming communities, and farmers within a community who have a low level of social capital. Finally, farmers’ ability to adapt to drought is also associated with the characteristics of their households and local communities. The results of this study also have implications for national adaptation plans for agriculture under climate change in other developing countries.
Leaving No one Behind: A critical path for the first 1,000 days of the Sustainable Development Goals. Overseas Development Institute
  • E Stuart
⁶⁸ Stuart, E. et al., 2016. Leaving No one Behind: A critical path for the first 1,000 days of the Sustainable Development Goals. Overseas Development Institute, London. https://www.odi.org/sites/odi.org.uk/files/resource-documents/10691.pdf ⁶⁹ World Bank, 2009. Water Resources: Managing a Scarce, Shared Resource. http://documents.worldbank.org/curated/en/659671468329099994/ Water-resources-managing-a-scarce-shared-resource ⁷⁰ WWAP (World Water Assessment Programme), 2017. The United Nations World Water Development Report 2017: Wastewater the Untapped Resource. United Nations Educational, Scientific and Cultural Organization (UNESCO), Paris. http://unesdoc.unesco.org/ images/0024/002471/247153e.pdf
A Snapshot of the World's Water Quality: towards a global assessment
⁷³ UNEP (United Nations Environment Programme), 2016. A Snapshot of the World's Water Quality: towards a global assessment. UNEP, Nairobi. https://uneplive.unep.org/media/docs/assessments/unep_wwqa_report_web.pdf
Wetlands: A global disappearing Act
⁸³ Ramsar Wetland Convention, 2016. Wetlands: A global disappearing Act. Fact sheet 3. http://www.ramsar.org/sites/default/files/documents/ library/factsheet3_global_disappearing_act_0.pdf
Joint Monitoring Programme of Water Supply and Sanitation, UNICEF and WHO)
⁵⁰JMP (Joint Monitoring Programme of Water Supply and Sanitation, UNICEF and WHO), 2015. Progress on Sanitation and Drinking Water: 2015 Update and MDG Assessment. WHO, Geneva. https://www.unicef.org/publications/index_82419.html
The State of the World's Indigenous Peoples, STT/ESA/328. UN Department of Economic and Social Affairs, Division of Social Policy and Development, Secretariat of the Permanent Forum on Indigenous Issues
  • Statepartiesrep Cescr
http://www.refworld.org/publisher,CESCR,STATEPARTIESREP,,,,0.html ⁴⁵ United Nations, 2009. The State of the World's Indigenous Peoples, STT/ESA/328. UN Department of Economic and Social Affairs, Division of Social Policy and Development, Secretariat of the Permanent Forum on Indigenous Issues. United Nations, New York. http://www.un.org/esa/ socdev/unpfii/documents/SOWIP/en/SOWIP_web.pdf