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Phnom Penh, the capital of the Kingdom of Cambodia, lies on the confluence of the Mekong and the Tonle and Bassac rivers. These rivers are the main source of freshwater for the city’s population of about 1.3 million. Many of the Asian cities’ publicly managed water utilities perform below their potential. Cambodia’s Phnom Penh Water Supply Authority (PPWSA) undertook major reforms and transformed a war-ravaged water utility into a commendable model that stands for other cities to emulate

The Pillahuinco basin is located in one of the most productive regions of Argentina. It is within the roads that connect the southernmost parts of the country with the capital and the far north, as well as the Andean provinces of the west with the ports of the Atlantic coast, intersect there. The basin covers a region with a distinct topography, presenting a highland area with elevations between 250 and 650 meters. With a plain that can reach about 125 meters where agricultural activities predominate. The agriculture activities have resulted to environmental problems calling for an approach that can provide solutions to support sustainable development of the basin.

The European rivers Mura, Drava and Danube form a 700 km long “green belt” connecting more than 800,000 ha of highly valuable natural and cultural landscapes in five countries (Austria, Slovenia, Croatia, Hungary and Serbia). This area is a symbol of unity among the countries and is planned to become a protected Transboundary UNESCO Biosphere Reserve “Mura-Drava-Danube” (TBR MDD).

Creating the institutional and legal frameworks for the development of ground water is essential, the dialogue will make the advocacy in the countries

The paper explores how international law facilitates transboundary cooperation in a manner that is accessible to the wider transboundary water community. It discusses the norms and principles contained in treaties and rules of customary law and examines how these work in selected case studies from across the GWP network. This is a Technical Background Paper, written by the GWP Technical Committee, a group of internationally recognised professionals in integrated water resources management.

This paper presents an overview of the benefits of urban groundwater use, together with some harmful and persistent problems that groundwater can present for urban development. This is a Perspectives Paper, meant to incite a discussion on important issues related to water and development.

One way to address the complexity of water resources systems is by applying decision support systems (DSS) and computerised models. These present the interrelated elements of the system in a comprehensive way and allow water managers to better understand multiple factors and future uncertainties. This Technical Focus Paper provides for guidelines for elaborating and validating modelling/DSS tools. It is a joint knowledge product of GWP, UNEP-DHI Center, DHI and SIWI.

This paper answers the question of how to prioritize investments in water security. It explores the most important aspects for enabling growth and the most significant investments to increase water security. It also provides guidance on how economic considerations can inform the decisions of policy-makers on the allocation of resources to water management. This is a Technical Background Paper, written by the GWP Technical Committee, a group of internationally recognised professionals in integrated water resources management.