Water Papers

170 items available

Permanent URI for this collection

https://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.

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Now showing 1 - 10 of 56

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 in Circular Economy and Resilience
(World Bank, Washington, DC, 2021-09-15) Delgado, Anna; Rodriguez, Diego J.; Amadei, Carlo A.; Makino, Midori
Rethinking urban water through the circular economy and resilience lenses offers an opportunity to transform the urban water sector and deliver water supply and sanitation services in a more sustainable, inclusive, efficient, and resilient way. Circular Economy principles have emerged as a response to the current unsustainable linear model of "take, make, consume, and waste." In a circular economy, the full value of water – as a service, an input to processes, a source of energy and a carrier of nutrients and other materials – is recognized and captured. This report presents the Water in Circular Economy and Resilience (WICER) Framework together with global case studies that show the benefits of becoming circular and resilient. It describes the key actions needed to achieve three main outcomes: 1) deliver resilient and inclusive services, 2) design out waste and pollution, and 3) preserve and regenerate natural systems. The report sets out to demystify circular economy by showing that both high-income and low-income countries can benefit from it.
Remote Sensing of Water Quality in the Valle de Bravo Reservoir, Mexico
(World Bank, Washington, DC, 2020-10) World Bank
This case study assessed ongoing initiatives to address surface water pollution issues in Mexico, working in partnership with the Comision Nacional del Agua (CONAGUA), the national agency responsible for the administration of water resources and its management. Particular focus was placed on a pilot case study application of remote sensing techniques to detection of water-quality issues in the Valle de Bravo reservoir. This assessment will contribute to a better understanding of options for water-quality remote sensing capabilities and needs. It will assist in identifying appropriate remote sensing tools and devising an application strategy to support decision making regarding the targeting and monitoring of nutrient pollution prevention and mitigation measures.
Remote Sensing of Water Quality in Laguna del Sauce, Uruguay
(World Bank, Washington, DC, 2020-05) World Bank
Laguna del Sauce is a water supply reservoir located in the Department of Maldonado (Uruguay), approximately 15 kilometers west of Punta del Este and 100 kilometers east of Montevideo. This case study assessed ongoing initiatives to address surface water pollution issues in Uruguay, working in partnership with a team of government agencies charged with water resource management. This assessment will contribute to better understanding of options for water-quality remote sensing capabilities and needs. It will also assist the government of Uruguay in identifying appropriate remote sensing tools and devising an application strategy to provide information needed to support decision making regarding the targeting and monitoring of nutrient pollution prevention and mitigation measures.
Water Scarcity in Morocco: Analysis of Key Water Challenges
(World Bank, Washington, DC, 2020-01) Taheripour, Farzad; Tyner, Wallace E.; Haqiqi, Iman; Sajedinia, Ehsanreza
Morocco is expected to be faced with a major water shortfall prompted by either expansion in demand for water or reduction in precipitation induced by climate change. This paper examines the economywide impacts of these factors for Morocco. It uses a computable general equilibrium model augmented with submodules that trace consumption of water by uses and land allocation across sectors including crops, livestock, and forestry. Results show that water scarcity and changes in crop yields induced by climate change could reduce the GDP of Morocco up to 6.7 billion US dollars per year at 2016 constant prices and eliminate many job opportunities, in particular in the rural areas of this country. Only a portion of these negative impacts can be removed with improvements in water use efficiency. The factors mentioned above will reduce productivity of Morocco’s cropland and have the potential to reduce irrigated areas. Due to these changes, production of crops and food products are expected to fall, with increases in crop prices by up to 14.3 percent, assuming other factors being equal. Investment in water use efficiency practices that save water, in particular in agricultural activities, and shifting toward more valuable and less water intensive crops can help to partially mitigate these adverse impacts.
Toward Managing Rural Drinking Water Quality in the State of Punjab, India
(World Bank, Washington, DC, 2020-01) World Bank
Rural drinking water quality is an emergent issue in the State of Punjab. In response to health concerns related to children being exposed to metals in some regions, and reports of higher incidence of cancers in the state, the department of drinking water supply and sanitation conducted blanket testing of all its water supply sources. The objective of this study was to systematically examine the drinking water quality issue and provide practical guidance to the state on possible responses. The state’s commitment to addressing this issue is highlighted by its allocation of 59 million dollars for a component to improve water quality through the Punjab Rural Water and Sanitation Sector Improvement Project, financed by the World Bank. While the study seeks to provide an analytical basis for understanding the occurrence and impact of the contamination, practical actions have been explored and demonstrated to allow the state to begin actively managing the water quality issue. The study is designed around three key areas: understanding the problem; taking appropriate action; and institutional sensitization and action. This report is a first step toward understanding and managing water quality issues in the state. It provides an analytical basis for moving forward and has demonstrated approaches that have yielded valuable lessons for scale-up. The next steps are for the state to identify key actions and develop detailed action plans for implementation.
Determinants of Declining Water Quality
(World Bank, Washington, DC, 2019-12-19) Ayana, Essayas
This is a background paper for "Quality Unknown: The Invisible Water Crisis." (Report No. 140973)This review examines determinants of poor water quality and natural and anthropomorphic factors determining water quality. It also discusses various water quality parameter measurement tools that can be applied in situ or remotely to assess water quality easily so measurements can be used to evaluate the economic impact of poor water quality. The correlation of water quality indicators to determinants (natural or anthropogenic) is also summarized based on the abundance of literature supporting the relationship. In doing so, this paper takes a thematic approach and applied the following search phrases to the literature review: "determinants of (parameter) in surface water," "drivers of (parameter) in surface water," and "remote sensing techniques to estimate (parameter)."
Policy Instruments for Water Pollution Control in Developing Countries
(World Bank, Washington, DC, 2019-12-10) Olmstead, Sheila; Zheng, Jiameng
This paper surveys the economic theory behind regulatory and other solutions to the stark ambient water pollution problems that exist in many developing countries, and what is known from the empirical economics literature about the effectiveness of these solutions.
The Impact of Water Quality on GDP Growth: Evidence from Around the World
(World Bank, Washington, DC, 2019-12-10) Desbureaux, Sebastien; Damania, Richard; Rodella, Aude-Sophie; Russ, Jason; Zaveri, Esha
Declining water quality can impact the economy in various ways. Impacts can be found in the health sector, where labor productivity can be affected, in agriculture, where the quality and quantity of food produced can be reduced, and in tourism, real estate, aquaculture/fisheries and other sectors which rely on environmental quality and ecosystem services. Despite these well-known impacts, finding economy-wide affects of water quality on economic activity can be elusive. In this paper we attempt to fill this gap by using a conventional empirical approach in contemporary environmental economics and new data on economic activity and water quality for nineteen countries from 1990-2014. The authors find that when rivers become very heavily polluted, regions downstream see reductions in economic growth, losing between 0.8 and 2.0 percent of economic growth. These losses imply that in many places, the costs of environmental degradation are severely under-estimated and well above efficient levels.
Salt of the Earth: Quantifying the Impact of Water Salinity on Global Agricultural Productivity
(World Bank, Washington, DC, 2019-12-10) Desbureaux, Sebastien; Russ, Jason; Escurra, Jorge; Damania, Richard; Rodella, Aude-Sophie; Zaveri, Esha
Salinity in surface waters is on the rise throughout much of the world. Many factors contribute to this change including increased water extraction, poor irrigation management, and sea-level rise. To date no study has attempted to quantify impacts on global food production. In this paper we develop a plausibly causal model to test the sensitivity of global and regional agricultural productivity to changes in water salinity. To do so, we utilize several local and global datasets on water quality and agricultural productivity and a model which isolates the impact of exogenous changes in water salinity on yields. We then train a machine learning model to predict salinity globally in order to simulate average global food losses from 2000-2013. These losses are found to be high, in the range of the equivalent of 124 trillion kilocalories, or enough to feed over 170 million people every day, each year. Global maps building on these results show that pockets of high losses occur on all continents but can be expected to be particularly problematic in regions already experiencing malnutrition challenges.