Copyright © 2018 Authors. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. International Journal of Engineering & Technology, 7 (3.9) (2018) 86-88 International Journal of Engineering & Technology Website: www.sciencepubco.com/index.php/IJET Research paper Institution and Legal Aspect Based River Water Quality Management Idi Namara 1 , Djoko M Hartono 2 , Yusuf Latief 3 , Setyo Sarwanto Moersidik 4 1 Dept. of Civil Engineering Univesitas Indonesia, Depok, Indonesia 2 Dept. of Civil Engineering Univesitas Indonesia, Depok, Indonesia 3 Dept. of Civil Engineering Univesitas Indonesia, Depok, Indonesia 4 Dept. of Civil Engineering Univesitas Indonesia, Depok, Indonesia *Corresponding author E-mail:idi.namara@ui.ac.id Abstract About 75% of rivers in Indonesia are experiencing severe pollution. The pollution comes from domestic waste. One of the important rivers in Indonesia that is experiencing pollution is the Cisadane River. The Cisadane River issues in Tangerang are erosion, sedimenta- tion, not yet controlled public space, availability water, and water quality. The background of this research is the existence of water qual- ity problems Cisadane Tangerang City of Banten Province. There are many institutions that manage the Cisadane watershed, but the effectiveness of these institutions in solving environmental problems in the Cisadane watershed is ineffective. Similarly, current regula- tions have not been effectively implemented. The purpose of this study is to determine the authority and agencies that manage the Cisa- dane watershed in Tangerang, examining the effectiveness of cooperation among agencies, seeking the most effective alternative institu- tions in Cisadane water quality management, as well as optimizing the implementation of regulations. This research is a qualitative re- search, this research also is multi case and explorative, so this research uses three stages of research, previous study phase study, focus group discussion and data analysis. The conclusion of this research is to get the best and effective alternative institution in managing Cisadane River and to strengthen regulation or law. Keywords: Water Quality, Institution Aspect, Legal Aspect. 1. Introduction Cisadane river is one of 15 rivers in Indonesia whose management is a priority [2]. For the city Tangerang, water Cisadane has a big function, as a major source for raw water sources for drinking water supply for the community. Several ways have been done to manage the quality of river water Cisadane especially segment Tangerang City, including the arrangement with the approach of construction projects. In addition, management is required through legal and institutional aspects. Ahmadi (2012) describes the need for decision making in water quality management by taking into account social, economic, and environmental factors [1]. These three aspects are part of the institutional and legal aspects. Whichever approach is chosen to determine development priori- ties in the management of the river is actually not a problem, but the important consideration is to set up the institutional aspects or institution that became the coordination center [3]. Institutional and legal aspect problems surrounding the management of river quality is difficult, from the rule of finance, management, policy, prioritization of physical development, and so on. One of the most important aspects to support the implementation of a water action plan is the human resource capacity, especially in government institutions. Institutional and legal parties’ efforts can be dissi- pated due to the constant changing of human resources [4]. In many countries, every new government changes not only the Ministers, but also other key functionaries and experienced officials. Others leave because they find better employment opportunities elsewhere. The instability of human resources can disrupt the line of work and affect the effective formulation and implementation of the existing policies. Water quality management Cisadane also experienced problems in the legal aspects and institution aspects. The river that crosses the 5 cities and 2 provinces still have fairly high pollution. Although each city and provincial governments there have been institutions that manage the water quality of the river, but the river water pol- lution is still happening. The synergy between the regions is not yet in the form of role-sharing between the provincial and city. The location of Cisadane River Tangerang is shown below. Fig 1. Location Cisadane Watershed of Tangerang City (Source : Bakosur- tanal) Currently, there is no single agency management of rivers and river water quality that can integrate all the stakeholders from Location