River basin management for water security in Indonesia

Indonesia river basin management water securityHousehold and urban water security in Indonesia is an important challenge. Only 20% of households have piped water access and 54% have access to sanitation in rural areas. In urban settings, piped urban water supply access is 36%. In terms of water quality only 34% of the water is treated in waste water treatment plants. Nevertheless, since 1990 Indonesia has significantly increased the percentage of its population with access to safe drinking water, this being 70% in 1990 and reaching 85% in 2012.

In Java, water security is inadequate due to persistent problems in water supply, sanitation and water quality as well as high risk of floods and droughts. The situation might be aggravated due to the impacts of climate change and future socio-economic developments.

Sustainable Development Goals

In September 2015 the United Nations adopted the 17 Sustainable Development Goals (SDGs) to end poverty, protect the planet, and ensure prosperity for all. Sustainable Development Goal 6 focusses on clean water and sanitation and wants to ensure availability and sustainable management of water and sanitation for all. Each goal has specific targets to be achieved by 2030.

In this context, Deltares in collaboration with national and regional governmental agencies, scientific community, local stakeholders and other consultancy companies has completed the formulation of Integrated River Basin Management plans for 5 major river basin territories in Indonesia as part of the WISMP2-BWRMP project supported by the World Bank.


Combining technical and local knowledge for modelsCollaborative Modelling Indonesia

The preparation of the Integrated River Basin Management plans involved collaborative development and use of a RIBASIM water allocation model. The collaborative modelling approach comprised direct capacity development for key stakeholders on the development and use of the water balance model. This was combined with various collaborative workshops where policy makers, governmental agencies, universities and local stakeholders provided input for the development and use of the model based on their local knowledge. They were involved in the design and development of the model and data collection, as well as, in defining the water-related problems in the region and possible interventions to be implemented.

Ultimately, the collaborative modelling approach supported the dialogue among stakeholders for informed decision making on the preparation of the Integrated River Basin Management plans.

Indonesia rice river basin management water security