Water In Asian Cities

Recognizing that safe and adequate water supplies are an essential component of fighting poverty and disease, the ADB Water for All Publication series focuses on understanding the water issues facing poor people in developing countries in Asia and the Pacific region. This document summarizes both a comprehensive study on water in 18 Asian cities and a regional workshop held to present the findings of the study to representatives of civil society and the media and examine the role these groups play in finding solutions to improve access and quality of water for the urban poor.

In 2007, the world's urban population surpassed the number of people living in rural areas and is still growing. The number of city dwellers who do not have access to piped water and rely on groundwater is also increasing. In many Asian cities, groundwater is not only the source of domestic water but also an important resource for industrial development, making better management of groundwater resources essential for sustainable development. Because groundwater is easier to access and costs less than water from piped systems, groundwater abstraction cannot be easily regulated. Policies for groundwater management adopted in Japan and other Asian countries are compared, and technologies for efficient use of groundwater are elucidated. Groundwater contamination is also a serious problem that exacerbates water scarcity in Asian cities. Case studies illustrate the cause and consequences of naturally occurring contaminants such as arsenic and fluoride, and groundwater contamination due to anthropogenic contaminants is described. Also discussed are technologies for treating contaminated groundwater to reduce the health risks of drinking contaminated groundwater.

This book presents water insecurity issues in urban areas while developing a water security index and explores the innovative approaches to water development and management with examples from Asian cities. The urban water crisis is a global phenomenon, but it is more obvious in the megacities of the developing world. Urban drought, although not a familiar term, will pose a significant threat to humankind in the near future, especially in the context of increasing population in cities. Many cities are already unable to provide safe, clean water for their citizens. Some of the world’s largest cities depend heavily on groundwater for their water supply. It is unlikely that dependence on aquifers, which take many years to recharge, will be sustainable. As urban populations grow, water use will need to shift from agriculture to municipal and industrial uses, making decisions about allocating between different sectors difficult. Inefficient water-use practices by households and industries, fragmented management of water between sectors and institutions, climate-induced water shortages, environmental degradation of water sources, and inadequate use of alternate sources are also issues of major concern. Despite recent advances in the literature, there exists a considerable gap in attempting an integrated water-resource management approach. Covering all aspects of urban drought and water insecurity, this book is a valuable resource for students, researchers, academics, policy makers, and development practitioners.

This book features expert contributions on key sustainability aspects of urban water management in Chinese agglomerations. Both technical and institutional pathways to sustainable urban water management are developed on the basis of a broad, interdisciplinary problem analysis.

Groundwater contributes to the sustainable development of many Asian cities by providing water for domestic, industrial and agricultural uses and regulating ecosystem flows. However, groundwater has not always been properly managed, which often has resulted in depletion and degradation of the resource. Groundwater Environment in Asian Cities presents the up-to-date scientific knowledge on groundwater environment in fourteen Asian cities using Driver-Pressure-State-Impact-Response (DPSIR) framework. In detail the book presents the facts and figures of groundwater dependency, problems related to groundwater over exploitation, implementation of various policy instruments and management practices and their results in selected fourteen Asian cities, namely; Bandung (Indonesia), Bangkok (Thailand), Beijing (China), Bishkek (Kyrgyzstan), Chitwan (Nepal), Delhi (India), Dili (East Timor), Ho Chi Minh (Vietnam), Hyderabad (India), Khulna (Bangladesh), Lahore (Pakistan), Seoul (South Korea), Tokyo (Japan), and Yangon (Myanmar). The book provides the one-step platform to get sufficient details about groundwater aquifers, hydrogeology, groundwater status, impacts on groundwater environment and responses (technology, policy, institutional, etc.) deployed in the case studies cities, and therefore, provides a snap-shot of Asian groundwater environments. The theoretical background of the topics discussed along with the case studies help the readers understand the similarities and differences about the status of groundwater development and use in each city. In addition, the information in the book will serve as a baseline for other research such as mitigation of groundwater related problems (e.g., land subsidence), impact of climate change on groundwater, and importance of groundwater for implementing sustainable development goals in future. Presents a framework for evaluating groundwater environment in urban environments Includes case studies and local examples from a broad geographical range of urban environments from virtually every region in Asia, including Bandung, Bangkok, Delhi, Bishkek, Beijing and Tokyo The book will be a valuable resource for groundwater adversaries in the scientific, decision-making and end-user communities, particularly for understanding and assessing state of groundwater resources in the region as well as learning from the responses practiced so far (Dr. Linda Anne Stevenson, APN) The contents in this book are very much useful for informed decision-making for protecting groundwater environemntand therefore contributes in making invisible visible (Dr. Neno Kukuric, IGRAC) With concrete examples and lessons for readers, this book responds to the call for comprehensive research and studies, the implementation of new science-based methodologies and endorsement of principles for groundwater resources management and cities (Dr. Aureli Alice, UNESCO-IHP) As a “Regional Hub for Groundwater Management in the Asia Pacific Region , IGES finds this book as a very much useful reference for knowledge hub partners, groundwater managers, academic institutions, research scholars, and international organizations working in the areas of groundwater in Asia and beyond (Dr. Hideyuki Mori, IGES)

Asian developing country urban water supplies have progressed little in the last 20 years. Coverage in cities with 24 hour piped, potable water is still under 50% in most cities. Coverage with sewerage is much lower. Unaccounted for water still averages about 35% of production. The author brings his 25 years experience in developing country water supplies to bear in examining why we have failed and what must be done to get on the right track. Features of this book: The book identifies the myths and realities in the sector It looks at issues and solutions under a number of important topics Governance and tariffs are identified as both core problems and core solutions Reference is made to recent field data, including (i) a survey of 20 cities in 20 countries; (ii) case studies on water supplies in Male?, Manila, Phnom Penh, Colombo, Kathmandu and Dalian; and (iii) case studies on small-scale water service providers in various cities A new approach to development and management of water supplies is proposed, based on transparent government policy, regulation and benchmarking and the involvement of civil society Finally, the author looks at what the goals should be and a strategy to achieve those goals Asian Water Supplies will be of great value to government agencies, municipalities, water utilities, consultants, donors and non-government organizations. This title is not currently available to order

The Asian Water Development Outlook charts progress in water security in Asia and the Pacific over the past 5 years. This 2016 edition of the report uses the latest available data to assess water security in five key dimensions: household access to piped potable water and improved sanitation, economic water security, providing better urban water services to build more livable cities, restoring healthy rivers and ecosystems, and resilience to water disasters. The region shows a positive trend in strengthening water security since the 2013 edition of the report, when 38 out of 49 countries were assessed as water-insecure. In 2016, that number dropped to 29 out of 48 countries. This study was supported by ADB’s Water Financing Partnership Facility.