But guidance is limited with respect to how to accomplish such integrative aims, including how to support discussions across sectors and silos of practice in order to foster better understanding regarding the problems a policy network collectively aims to address. Participatory mandates, coordination bodies, and collaborative networks have emerged to facilitate such integration, and their effective cooperation and alignment relies upon some degree of shared purpose, rather than command and control. As such, water decision-makers striving to coproduce and employ shared knowledge must grapple with integrating inputs from diverse participant groups to characterize policy problems and identify effective and feasible solutions. Moreover, the call for evidence-based policy of '00s has been tempered by recognition of the political nature of data and science. Increasing calls for participation recognize the value of broadened perspectives that provide both technical expertise as well as social, cultural, and administrative knowledge. Recognizing the interrelatedness of water use and conceptual value of IWRM, progressive water resource management systems are moving beyond hierarchical arrangements toward more integrated networks. Resource and capacity of Provincial and Regency/City Level EPA, as leading institution of river water quality management, still needs significant improvement managing water quality environment. Results showed the policies, regulation and methods of monitoring in district and city level were still inadequate so that almost the entire receiving river quality is very low.

Brantas River has variety of industries with uniform percentage. Dominating industry around Bengawan Solo are textiles 42%, food and beverages 16% and others. Discharge of wastewater has exceeded 4 times to allowable discharge. Data shows the dominating industry in Upper Citarum is 75% textile industry and the rest varied from electroplates, chemicals, and others in smaller percentage.

This study selected three largest watersheds in Java island, namely Citarum, Bengawan Solo and Brantas. Research method was conducted by collecting secondary data, industry amount analysis, and FGD with relevant institutions.

Carrying capacity of water resources was reviewed by analyzing river water quality, regulatory policies and its implementation in Provincial/Regency/City level. Being implemented in action, impacts on water resources sustainability needs to be reviewed. Java economic corridor, outlined in Masterplan of Acceleration and Expansion of Indonesia Economic Development 2011-2025 (MP3EI), is aiming for Indonesian economic growth through industry development.

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