Securing Africa’s
Future Water Needs
Generating Resilience through Infrastructure, Investment,
Information & Institutions in Sub-Saharan Africa
Africa’s water systems are in crisis. From the Sahel to South Africa, 845 million people lack safely managed drinking water, and over 900 million do not have access to safely managed sanitation services.
The consequences of this water insecurity are severe. Inadequate water and sanitation services degrade public health, undermine food security, and sap economic growth. Unsafe water and insufficient sanitation cause more than 1 million deaths in Africa each year. The African Union estimates the countries of sub-Saharan Africa lose a crushing 5 percent of their GDP annually due to scarce or contaminated water supplies or poor sanitation.
Pressures on the continent’s strained water resources are escalating alongside its growing population and economies. Projections show that water use in sub-Saharan Africa will soar 103 percent by mid-century. Nearly two-thirds of Africa’s labor force currently works in water-dependent sectors like agriculture and mining. The future of this region depends on solving its water resource challenges.
To provide long-term, reliable water services to the people of sub-Saharan Africa, it is imperative that governments, service providers, donors and development funders, and communities work together in a deliberate, integrated approach to water security. By leveraging infrastructure, investment, information-sharing, and institutions in unison, the region can build sustainable and resilient water systems for all.
The Water Crisis in
Sub-Saharan Africa
Understanding where the region stands today is the first step toward building a water-secure future:
Sub-Saharan Africa is the world’s most water-insecure region.
Water-secure societies ensure that their populations have reliable access to adequate supplies of safe water to sustain human well-being and socioeconomic development. In 2023, a comprehensive global assessment by the United Nations ranked every country in the region water insecure to critically insecure.
Five key intersecting factors drive the mounting challenges to water security in this region:
Dar es Salaam's rapid urban growth has pushed residents to turn pedestrian footbridges into informal spaces. | Ericky Boniphace/AFP via Getty Images
Dar es Salaam's rapid urban growth has pushed residents to turn pedestrian footbridges into informal spaces. | Ericky Boniphace/AFP via Getty Images
1. Growing Populations
The region’s population is projected to climb 79 percent by 2054, with a corresponding increase in the demand for water. Much of this growth will occur in cities, where the population confronting recurrent water shortages could reach 162 million in the same time period.
Rapidly growing populations will also have dramatic impacts on informal settlements and intermediary towns that already often lack public services and infrastructure.
A technician checks on a center-pivot irrigation system at the Livestock Demonstration Center in Idini village, Mauritania. | Han Xu/Xinhua via Getty Images
A technician checks on a center-pivot irrigation system at the Livestock Demonstration Center in Idini village, Mauritania. | Han Xu/Xinhua via Getty Images
2. Rising Water Demands
Water demands in sub-Saharan Africa are climbing more quickly than anywhere else on Earth. Across the region, domestic water needs are anticipated to triple from 2010 to 2050. Water claims from industry and manufacturing are also expected to skyrocket up to 700 percent. These trajectories raise the specter of increasing competition for limited resources among household, agricultural, and industrial users.
A Somalian woman carries a water bin at the Mooro Hagar camp in the Somalia's Bay state on March 29, 2017. | Arif Hudaverdi Yaman/Anadolu Agency via Getty Images
A Somalian woman carries a water bin at the Mooro Hagar camp in the Somalia's Bay state on March 29, 2017. | Arif Hudaverdi Yaman/Anadolu Agency via Getty Images
3. Shifting Water Availability
As global temperatures warm, rainfall patterns across the continent are becoming increasingly irregular. Projections suggest some areas may experience greater annual precipitation, but much of sub-Saharan Africa could see average yearly rainfall drop 10 to 20 percent in the coming decades. The consequences could be especially dire for agriculture. Rising water stress could reduce harvests by 30 to 90 percent depending on the crop.
Buildings submerged in floodwater in Giyani, South Africa on January 16, 2026. | Orlando Chauke/AFP via Getty Images
Buildings submerged in floodwater in Giyani, South Africa on January 16, 2026. | Orlando Chauke/AFP via Getty Images
4. Increasing Water-Related Disasters
The frequency of droughts has tripled, and flooding has surged more than tenfold in sub-Saharan Africa since the 1970s. Droughts dry up surface and groundwater sources, constricting available supplies. Floods can wash away infrastructure and overwhelm drainage and sewage systems, compromising service provision and contaminating water sources.
A polluted river is seen in downtown Kampala, Uganda on January 22, 2024. | Luis Tato/AFP via Getty Images
A polluted river is seen in downtown Kampala, Uganda on January 22, 2024. | Luis Tato/AFP via Getty Images
5. Worsening Pollution
Mounting pollution from expanding cities, agriculture, and industry is drastically deteriorating water quality in sub-Saharan Africa. Across the region, the proportion of the population exposed to various contaminants in water is climbing rapidly, rendering it the dominant global hotspot for water pollution. As a result, over half the region’s population is now exposed to contaminated drinking water.
Ensuring water security in this landscape of increasing demands, shifting pressures, and unpredictable disruptions will require resilient approaches.
Resilient water systems not only enable societies and systems to meet communities’ growing water needs, but they also help communities anticipate, adapt to, and recover from evolving shocks and stresses.
Crafting Resilient Water Systems for Sub-Saharan Africa
Building resilient water systems in sub-Saharan Africa will require bolstering the abilities of countries and communities to address evolving risks and their underlying drivers.
To accomplish this, three key capacities must be strengthened:
Absorptive
To prevent, mitigate, and withstand stresses to water systems like sudden floods or droughts
Adaptive
To create diverse capabilities for addressing evolving demands and long-term threats like climate change and pollution; and
Enabling
To facilitate decisionmaking processes capable of understanding and addressing risks through collective deliberation and engagement.
To realize these resilience capacities, the nations of sub-Saharan Africa must work to ensure sustainable infrastructure, adequate investment, actionable information, and effective institutions.
These are the essential, interdependent pillars of resilient water systems:
Pillar 1:
Infrastructure
Sustainable infrastructure represents the backbone of resilient water systems. Ponds, tanks, and dams collect and store water supplies for users. Treatment plants and protected wells ensure water quality. Canals, pumping stations, and pipe networks distribute water to households, agriculture, and industry. Sewage and drainage networks carry away stormwater and waste. Reservoirs, barrages, and irrigation schemes protect communities and crops from droughts and floods.
Yet much of sub-Saharan Africa lacks vital water infrastructure. Nearly one-third of the population lives without basic drinking water services—water from an improved source, such as piped water or a protected well, within a 30-minute round trip from their home. Across the continent, available water storage amounts to some 200 cubic meters per person, far below global averages. Only 5-6 percent of sub-Saharan agriculture is irrigated.
Critically, less than 10 percent of wastewater is treated before being dumped directly into the environment. Agricultural runoff, household waste, and industrial contaminants make many water sources dangerous for other users. Children are particularly at risk because of their early stage of development.
Much infrastructure development, however, struggles under a costly and wasteful cycle of build, neglect, and rebuild. The installation of hand pumps, for example, has expanded the physical infrastructure for water access in many countries. But sub-standard construction quality and lack of maintenance contribute to render one-quarter of hand pumps in sub-Saharan Africa inoperative at any given time. Up to 40 percent of new rural water points in some states fail within two years.
Ensuring long-term water security requires strengthening capacities and resources to supply and maintain essential water infrastructure.
Pillar 2:
Investment
Building, operating, and maintaining sustainable water service systems demands significant financial resources. The African Ministers’ Council on Water calculates that meeting Sub-Saharan Africa’s water and sanitation needs requires annual spending of 11.4 billion dollars, triple the amount of current investment.
Yet across the region, financing for the water sector is often deficient, fragmented, and difficult to sustain over time.
Public budgets funding water services through taxes and tariffs are small and declining, as governments tend to prioritize other sectors. Official development assistance (ODA), the second-largest source of water sector funding for the region, is also falling. Additionally, ODA flows exhibit considerable regional and economic inequities, concentrating on large projects in a handful of states.
Few utilities in the region generate enough revenue to cover their operating costs, much less expand services. Funding constraints push many providers to scrimp on proper management, staffing, maintenance, and repair. Mismanagement and disrepair exacerbate system losses to leaking pipes, defective meters, and theft. Such “non-revenue water” losses can swallow 30 to 90 percent of regional utilities’ water provision. Leaks and service disruptions in turn drive consumers to halt tariff payments or abandon service providers for alternative water sources, further sapping the sector’s financial resources.
The private sector represents an important potential source of finance but faces challenges. Water projects typically require significant upfront outlays, while the returns can be difficult to quantify and are often spread out over long payback periods. This makes water infrastructure hard to value and hard to monetize, deterring investment.
Yet reliable and resilient water systems generate tremendous societal and economic benefit.
These systems deliver up to seven dollars in returns for each dollar spent, in the form of employment opportunities, protection from disasters, and public health improvements.
Securing these benefits and strengthening societal water resilience requires attracting increased investment for water infrastructure projects. Implementing models for sustainable funding, operations, monitoring, and maintenance for reliable service delivery over systems’ lifetimes will also be important.
Pillar 3:
Information
Managing complex water security risks depends on accurate, timely, and consistent information to guide policymaking, implementation, and evaluation. Good data on water availability, water quality, and water uses can identify emerging needs and vulnerable populations. Analyses of weather patterns and infrastructure capacities can inform early warning systems for water-related disasters.
Much of sub-Saharan Africa, however, suffers from a comparative lack of detailed and accessible water data. Advances in multiple practices and technologies, such as household surveys and satellite remote sensing, offer significant new opportunities to enhance systematic data collection and fill gaps in areas with sparse in-situ monitoring capacities.
African policymakers recognize a lack of adequate data as a significant obstacle to achieving water security goals. Improving and ensuring the collection and application of such information streams will demand increased capacity building in national water and weather services. Strengthened collaboration among data providers and end users, and defined responsibilities and policies for data access and dissemination, will also be essential.
Pillar 4:
Institutions
Institutions manage water policy and decisionmaking. They build and operate infrastructure, collect and analyze information, and mobilize and allocate financial resources.
Water governance is a complex process in all countries. In sub-Saharan Africa, most water systems are managed by a mix of national, subnational, and local government institutions overseeing public utilities, traditional authorities or community-based management, and private sector actors.
The responsibility for managing water provision often falls upon complex institutional structures composed of multiple organizations, processes, and functions. This involves prioritizing and assigning roles, resources, and objectives across sectors, stakeholders, and scales.
But institutions managing watersheds, river basins, or groundwater aquifers do not typically align with the political boundaries of communities, countries, and government departments. Different ministries and authorities can have differing mandates for managing different water uses for agriculture, energy, or industry. Responsibilities and accountability can be overlapping, unclear, or contested, contributing to siloed policies and governance gaps.
Lack of coordination across differing scales, types of water use, and levels of governance can undermine resilience and generate adverse outcomes. In Ghana, for example, drought and climate stresses simultaneously strain household drinking water sources and rural agricultural production. Farmers deploy a variety of resilience strategies, including extending and intensifying irrigation. But uncoordinated increases in water use for crops can compete with the domestic needs of other consumers dependent upon the same water sources, spurring conflicts between households.
African decisionmakers universally identify institutional weaknesses and fragmentation as critical impediments to achieving water security.
Yet less than 16 percent of all global development assistance for water supply and sanitation in sub-Saharan Africa for 2002 to 2021 was directed to water sector policy, governance, and institutional capacity building.
Less than half of the countries of sub-Saharan Africa have have realized significant implementation of integrated water resources management and few have achieved meaningful levels of engagement enabling consumers and communities to contribute to policymaking.
Resilience can be encouraged through establishing regular participatory platforms and processes for gathering water stakeholders across institutions and levels of governance.
Deliberate mechanisms such as water user associations, umbrella authorities, and water commissions can promote policy coherence. Structured procedures to share knowledge, align priorities, and coordinate information and resource flows can help maximize development effectiveness and impact.
Taking Integrated Action for Water Resilience
Building resilient water systems for sub-Saharan Africa requires integrated policies bringing together governance, capacities, and resources.
Strengthening coordination among governance policies, stakeholders, and institutions is the key to synergizing investment, information, and infrastructure development to strengthen water security.
People sit on the grass listening to a sanitation presentation in Uganda. | Unknown via USAID
People sit on the grass listening to a sanitation presentation in Uganda. | Unknown via USAID
In Uganda, for example, the USAID Uganda Sanitation for Health Activity (2018–2023) created a model uniting actionable information, targeted investment, sustainable infrastructure, and institutional cooperation. USAID collaborated with Uganda’s regional water utilities and its Ministry of Water and Environment to expand water services in six small towns.
Planners surveyed water users about their water needs, vulnerabilities, and financial resources. By subsidizing connection fees and creating tiered tariffs rising with higher consumption, service in Uganda was substantially increased among low-income households. Significantly, the initial cost was more than offset by revenues from the enlarged customer base. This integrated strategy enabled the completion of 170 kilometers of network extensions and 1,400 new water connections. This increased water access while enhancing the utilities’ financial viability and resources for future water development.
In the North Mecha district of Ethiopia, locals used a farmland terracing technique called "fanya juu," which involves creating ridges along the contour lines of the landscape to prevent soil erosion and water loss. | Muluneh Bimrew via World Resources Institute
In the North Mecha district of Ethiopia, locals used a farmland terracing technique called "fanya juu," which involves creating ridges along the contour lines of the landscape to prevent soil erosion and water loss. | Muluneh Bimrew via World Resources Institute
An initiative in Ethiopia provides another model. In the North Mecha District of Ethiopia’s Amhara Region, rural water sources were dwindling. Deforestation and poor farmland management had degraded the soil and stripped the vegetation that absorbs the region’s rainfall. Streams and springs were drying out. With household and agricultural water supplies at risk, the NGOs the World Resources Institute, WaterAid, and the Millennium Water Alliance partnered with local communities and local government to realize a watershed restoration project strengthening water and food security.
Over three years, the project built 28 check dams to control water runoff, planted 187,000 tree and grass seedlings, and constructed 20 kilometers of farmland terraces to stabilize the soil.
Community members designed and led the rehabilitation work. The NGOs provided water and land management training, technical assistance, and data monitoring. District officials from the Water and Energy Office collaborated with counterparts in the agriculture, forestry, and environment sectors and water and sanitation authorities to ensure cross-sectoral project scoping, implementation, and evaluation. By linking traditionally separate approaches to watershed management and landscape conservation, the project laid strong foundations for long-term, sustainable water access, agricultural growth, and rural livelihoods.
Across the continent, Africa’s long history of engagement between governments, development funders, water users, and civil society stakeholders provides critical templates for sustainable paths toward water resilience.
Conclusion
Water is a unifying thread and a collective good, connecting sources and users, ecologies and economies, and consumers and communities. Strengthening water resilience can reduce vulnerabilities to water risks, sustain livelihoods, secure economic development, and ensure societal well-being.
Sub-Saharan Africa’s water resources are more than sufficient to supply its growing needs. Yet inadequate water access, unsafe water supplies, and rising water security risks undermine the lives and livelihoods of millions of people throughout the region. Effective management and development of water will be critical to catalyzing Africa’s economic development as well as alleviating water-related risks.
Governments, businesses, international organizations, development agencies, and local stakeholders all have important roles to play together in forging and sustaining resilient water systems for the continent.
A Malian proverb holds that to quench tomorrow’s thirst, communities must construct wells today. It is time for sub-Saharan Africa to build that resilient future.
This report has been made possible by the generous support of the Conrad N. Hilton Foundation.
Research
The CSIS Global Food & Water Security Program
WRITTEN BY:
David Michel, Senior Fellow, Global Food & Water Security Program
SPECIAL THANKS:
Anita Kirschenbaum
Zane Swanson
Caitlin Welsh
Joely Virzi
CSIS also thanks the participants in three project roundtables and the officials, practitioners, and stakeholders who contributed to expert consultations in Ethiopia, Ghana, and Uganda.
Story Production
The Andreas C. Dracopoulos iDeas Lab:
EDITORIAL, DESIGN & PROJECT MANAGEMENT BY:
Sarah B. Grace
DESIGN & PRODUCTION BY:
Gina E. Kim
PRODUCTION ASSISTANCE BY:
Shannon Yeung
DATA VISUALIZATIONS BY:
Fabio Murgia
Sarah B. Grace
WEB DEVELOPMENT BY:
José Romero
COPYEDITING BY:
Phillip Meylan
Hunter Macdonald
Photo Credits
Cover: Hand pump water well in Africa. | MediaStorm via Getty Images.
The Water Crisis in Sub-Saharan Africa:
Left banner: View of rush hour traffic on a street in Lagos, Nigeria. | Bloomberg Video via Getty Images.
Right banner: People are seen with their animals in a drought affected area in Bisil town, Kajiado region in Kenya. | Gerald Anderson/Anadolu via Getty Images.
Crafting Resilient Water Systems for Sub-Saharan Africa:
Left banner: A local worker digs the dirt in preparation for a school building in rural Ghana. | Arviest via Getty Images.
Right banner: A worker crosses a footbridge at the Criterion water treatment plant in Bulawayo, Zimbabwe. | Bloomberg/Contributor via Getty Images.
Key Capacities: A worker inspects a flood barrier by the overflowing Niger river near the Lamorde district of Niamey in Niger. | Boureima Hama/AFP via Getty Images; People establish a contour hedge to prevent erosion in Mt. Oku, Cameroon. | Universal Images Group via Getty Images; Minister for Small Business Development Stella Ndabeni-Abrahams at the meeting between the provincial and national executive governments in Gqeberha, South Africa. | Lulama Zenzile/Die Burger/Gallo Images via Getty Images.
Pillar 1: Infrastructure: Workers walk at the Cameroon Water Utilities Corporation water treatment plant refurbished by the International Committee of the Red Cross in Mokolo, Cameroon. | Kepseu/Xinhua via Getty Images.
Pillar 2: Investment: South African President Cyril Ramaphosa delivers his opening address at the Africa Water Investment Summit in Cape Town, South Africa. | Shakirah Thebus/Xinhua via Getty Images.
Pillar 3: Information: Mme Hassan Haoua checks the quality of river water in the research laboratory of the SEEN water treatment plant in Niamey, Niger. | Issouf Sanogo/AFP via Getty Images.
Pillar 4: Institutions: Executive Mayor Dada Morero and Gauteng Premier Panyaza Lesufi during a media briefing at Johannesburg Water Head Office in Johannesburg, South Africa. | Luba Lesolle/Gallo Images via Getty Images.
Taking Integrated Action for Water Resilience:
Left banner: Six women drawing water into plastic containers from a communal water pump in Mahenye Village, Zimbabwe | Martin Harvey via Getty Images.
Right banner: Pemmy Majodina, South Africa's water and sanitation minister, during a site inspection of the Goodenough Abstraction Works project in KwaZulu-Natal, South Africa. | Leon Sadiki/Bloomberg via Getty Images.
Conclusion:
Left banner: Women from the Samburu tribe collecting freshwater from a borehole in the desert landscape in Kenya, Africa. | Hugh Sitton via Getty Images.
Right banner: A man carries a plant on his shoulders in the North Mecha district of Ethiopia. | Muluneh Bimrew/World Resources Institute Ethiopia.
End photo: A family carries purified drinkable water. | BlackBoxGuild via Getty Images.
