Water Papers

180 items available

Permanent URI for this collection

http://hdl.handle.net/10986/16997

Water Papers are produced by the Water Global Practice, taking up the work of the predecessor Water Unit, Transport, Water and ICT Department, Sustainable Development Vice Presidency.

Items in this collection

Now showing 1 - 10 of 111

What the Future Has in Store: A New Paradigm for Water Storage

(Washington, DC, 2023) World Bank

Storing water is a critical part of water security, and the societal response to hydrological variability. Water storage increases the amount of water available for human, environmental, and economic use, reduces the impact of floods, and provides a variety of ancillary services such as hydropower and navigation by regulating water flows. Today, our societies, economies, and the environment depend on a web of natural and built water storage. However, as global demand for freshwater use increases and climate change is bringing profound changes to the water cycle, thus increasing our need for storage, the amount of net storage available is decreasing. The natural water storage systems that people have historically relied upon—glaciers, wetlands, soil moisture—are in decline or being disrupted. At the same time, investments in built storage have not kept pace with population growth, and though society is adding new reservoirs and other types of water retention structures, per capita reservoir storage is in decline due to sedimentation and lack of maintenance. These trends add up to a growing water storage gap that must be tackled to enable a water-secure world for all. This report unpacks the importance of storage, recent trends in the availability of storage, and sets forth a new integrated planning framework to guide water managers through a problem-driven and systems-oriented process to understand the options available to them to meet their water security goals and how the different forms of water storage can be part of the solution. This new approach fits within broader Integrated Water Resources Management with a focus on concurrent joint planning. Finally, the report lays out the conceptual shifts that are required to meet this mounting challenge and provides case studies from different countries where integrated approaches to planning and operating water storage investments have been tried with success.
Wastewater Treatment and Reuse: A Guide to Help Small Towns Select Appropriate Options

(Washington, DC: World Bank, 2022-03-31) Brault, Jean-Martin ; Buchauer, Konrad ; Gambrill, Martin

Small towns in low- and middle-income countries are growing rapidly and struggling to meet the increased demands of wastewater collection and treatment. To avert public health crises and continued environmental degradation, small towns are actively seeking safely managed sanitation solutions, appropriate for their scale, institutional capacity, financial resources, and overarching needs. This document is designed to provide a guide of small-town wastewater treatment processes in order to assist engineers, managers and other stakeholders responsible for wastewater service provision in identifying and selecting appropriate wastewater treatment processes for small towns. This guide is part of a World Bank suite of tools and other material to support World Bank teams and their government counterparts in the planning, design, and implementation of sanitation projects in urbanizing areas. Addressing the specific context of small towns, the format of this guide begins with an introduction of key concepts for a decision maker to understand and then applies a suggested five-step approach to exploring appropriate wastewater treatment technologies, culminating with case studies from three regions applying this approach. It delves into the unique considerations for small-town wastewater treatment and the exploration of corresponding technologies. Before demonstrating the application of the approach, the guide also navigates: (a) factors external to the technologies that define the characteristics and environment of a given small town and that will affect technology choice; and (b) technology-specific information that will ultimately influence decision making. Before embarking on the formal planning and design process, the user is highly encouraged to become familiar with the guide methodology in its entirety while drawing on the principles of the Citywide Inclusive Sanitation approach.
Seeing the Invisible: A Strategic Report on Groundwater Quality

(Washington, DC: World Bank, 2022-03-23) Ravenscroft, Peter ; Lytton, Lucy

This report describes why, and how, groundwater quality is vital to human health, agriculture, industry and the environment. In turn, this explains why it is so important to World Bank staff and clients, as well as diverse managers and administrators in countries and economies at all stages of development.
Practical Manual on Groundwater Quality Monitoring

(Washington, DC: World Bank, 2022-03-20) Ravenscroft, Peter ; Lytton, Lucy

This is a companion volume to “Seeing the Invisible: A Strategic Report on Groundwater Quality,” which explains why groundwater quality is so important to managers of development programs in the World Bank and elsewhere. Its purpose is to provide managers and their teams with practical guidance on how to set up and manage a groundwater quality monitoring program. It provides a logical, step-by-step approach that can be tailored to, and grow with, the capacity to implement such a program. The guiding principle is that monitoring is the fundamental activity that shapes our identification of issues, the framing of problems, the design of solutions, and the measurement of the effectiveness of those solutions. Monitoring is often seen as simple and undervalued, but monitoring of groundwater quality, and its interpretation, is technically demanding. On the other hand, it is also extremely rewarding.
Groundwater Quality: A Strategic Approach

(Washington, DC: World Bank, 2022-03-17) World Bank

This policy brief highlights the key messages for policy makers from the World Bank report “Seeing the Invisible: A Strategic Report on Groundwater Quality” (Ravenscroft and Lytton 2022a). This report and “A Practical Manual on Groundwater Quality Monitoring” (Ravenscroft and Lytton 2022b) describe the types of contaminants in groundwater, tools and resources for their measurement and long-term monitoring, and techniques to protect the resource from being contaminated in the first place.
Advancing Knowledge of the Water-Energy Nexus in the GCC Countries

(World Bank, Washington, DC, 2022) Jägerskog, Anders ; Barghouti, Shawki

Climate change and increasing population pressure make it increasingly urgent to find ways to improve the management of the water-energy nexus. The desalination, pumping, distribution, and treatment of water use significant energy resources. The extraction and production of energy consume substantial amounts of water resources. In addition, negative effects on the environment are often the consequences of the management of the water and energy sectors. The report highlights the prospects for addressing these and other challenges at the water-energy nexus. It does this by drawing, in part, on some of the most important breakthroughs in the nexus that have come from the region.
From Source to Sea: South Asia Water Initiative Completion Report 2013 - 2021

(Washington, DC, 2022) World Bank

This Completion Report summarizes cumulative results and outcomes for the South Asia Water Initiative (SAWI) Phase 2 (from 2013-2021). SAWI’s objective was to increase regional cooperation in the management of the major Himalayan river systems in South Asia to deliver sustainable, fair, and inclusive development and climate resilience. Four interlinked pathways supported the outcomes: (i) building confidence and trust among the countries – mainly by convening regional technical dialogues; (ii) generating new technical knowledge, including in partnership with others, for national programs to use and to help shift stakeholder perceptions; (iii) building capacity of key institutions and stakeholders by exposing them to regional collaboration efforts elsewhere and training them in the use of new tools and technologies to strengthen water resource management; and (iv) scoping and leveraging investments, most notably World Bank investments so that these new approaches could be embedded and taken to scale.
Water Matters: Resilient, Inclusive and Green Growth through Water Security in Latin America

(Washington, DC, 2022) World Bank

Water security is a matter of increasing concern across the world and Latin America and the Caribbean (LAC) is no exception. With rapidly growing demands for water and increasing variability due to climate change, ensuring water access to all users and mitigating water-related risks should be at the center of national and regional adaptation strategies. With nearly a third of the world's water resources, the LAC region's development has been inadvertently driven by water. This rich water endowment has allowed LAC to position itself as the world's largest net food-exporting region and greenest in terms of electricity production through hydropower. Water has played a fundamental role in reducing poverty, preserving LAC's natural wealth, and accelerating economic growth. More importantly, access to safe drinking water and sanitation services has contributed to improve the health and living conditions of millions of people. Despite this progress, there are urgent water sector challenges that threaten the region's sustainable development. Access to water and sanitation services is inequitable, with greater gaps in rural, indigenous, and peri-urban communities. In addition, water-related extremes such as floods and droughts are becoming more frequent and severe, having negative effects in lower-income communities. These gaps are more likely to be broadened by unsustainable water management practices, growing demands by competing water users, increasing pollution, and climate change impacts. In LAC, inadequate infrastructure results in a lack of storage and limited investment reduces the capacity of institutions to achieve integrated water resources management and improve service provision. The Stockholm International Water Institute (SIWI) conducts research, convenes multi stakeholder dialogues, builds institutional capacity, and provides policy advice to water decision-makers. Focused on improving water governance, the authors aim to contribute to more prosperous and inclusive societies.
Glaciers, Rivers, and Springs: A Water Sector Diagnostic of Nepal

(World Bank, Washington, DC, 2022) Joseph, George ; Shrestha, Anne

Nepal is rich in water resources with a dense network of glaciers, lakes, rivers, and springs that originate in the Himalayas. However, only an estimated 15 billion cubic meters (BCM) of the 225 BCM water available annually is utilized for economic and social purposes. Several elements have contributed to this low rate of utilization, including Nepal’s rugged geography, inadequate institutional capacity, a history of prolonged political instability, and highly skewed seasonality - more than 80 percent of the precipitation in a year falls within a span of four months. For sustained economic growth and poverty reduction, and to enhance shared prosperity, Nepal must increase its investments in water-related infrastructure and institutions and improve the effectiveness of these investments. Although there is much to be done to harness this vital resource, it is important to broaden the development focus and integrate hydropower in a larger water resource management strategy. This strategy will ensure that water is available for basic and economic needs - even through the dry season - as a core component of Nepal’s overall development plan. Given Nepal’s development context and challenges, this document aims to analyze the most pressing sector challenges and identify strategic sector priorities that are aligned with the country’s partnership framework. It offers a snapshot of water in Nepal’s development story and situates the water sector in the broader context of the national economy, highlighting the importance of managing water resources for sustained economic growth and poverty reduction. It then presents five pressing sector-related challenges and concludes with a set of priority areas.
Water in Circular Economy and Resilience: The Case of Phnom Penh, Cambodia

(World Bank, Washington, DC, 2021-05-23) World Bank

This case study is part of a series prepared by the World Bank’s Water Global Practice to highlight existing experiences in the water sector. The purpose of the series is to showcase one or more Two of the main pillars of a circular economy are resource efficiency and zero (or minimum) waste. By significantly reducing water losses and improving operational efficiency, the Phnom Penh Water Supply Authority (PPWSA) is embracing circular economy principles toward a more sustainable future.of the elements that can contribute toward a Water in Circular Economy and Resilience (WICER) system. This case focuses on the experience of Phnom Penh, Cambodia.