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Widodo B., Rully S., Donan W., Ribut L.,J. Rahmadani.


(The Proceeding of INTERNATIONAL SEMINAR On "The Reflection of Three Years of Yogyakarta Earthquake for Anticipation Future Earthquake Disasters" 27th May 2009, Master Program in Civil Engineering, Faculty of Civil Engineering and Planning, UII)


        Clean water is the main necessary for daily life, moreover after the earthquake. There are many dried well, after earthquake in 2006 that happen in Bantul, is the real condition for the limited clean water availability. Clean water that is supplied by tank trucks can not cover all societies’ need. In the rainy, with the rain fall average 200 mm/month, it could be good moment to sufficient the needing of clean water by using Rainwater Harvesting (RWH) method. The catchment area can be done by using tent’s roof to be flowed into storage tanks, for example bucket, drum or canvas. Generally, the quality of rainwater in Yogyakarta and surrounding areas are good enough and it is enough only by boiled it before consumed. But, if the quality of water is not good enough, it can be done by alternative of simple water treatment which is by filtering that use media such as grass, sand, gravel etc. This rainwater harvesting is considered to be alternative solution to sufficient clean water for disaster area, so that the priority of recovery in emergency and post disaster moment will be more focused on the victims not other problems. 

Keywords: rainwater harvesting, earthquake, mitigation, water supply





Widodo Brontowiyono*, Ribut Lupiyanto**; and A.H. Malik***

*Department of  Environmental Engineering, FTSP, Universitas Islam Indonesia (UII); **Center for Environmental Studies (PSL), UII; ***Professor of Dept. of Environmental Sciences, CIIT, Abbottabat, Pakistan


Oyo watershed, which mainly consists of rural area with 517,352 inhabitants and 0.65%/annum population growth, is one of degraded watersheds in Indonesia. Although the local government has formulated various watershed developments, the agriculture productivity of this area is still low. Water resources are the main factor that influences the low carrying capacity of its agriculture sector. Its abundant water availability (225,278,277 m3/year) indicates the potential water carrying capacity. With the annual rainfall of 1,858 mm and the low water demand (25,095,223 m3/year), it has a potential water surplus of 200,183,054 m3/year. In reality, due to the low rainwater harvesting, the carrying capacity is also low, indicated by the value of 0.67 with the population pressure of 1.49. This causes a revenue deficit for farmers who earn Rp 160,017.36 million/year while the normal living cost is Rp 2,483,289.60 million. This indicates the low optimality of water resources management. Therefore, the main target of Oyo Watershed management program is to use the available rainwater optimally to guarantee the stability of water availability in dry seasons.

(This paper is edited from the draft which was presented on The International Conference ESDev, Abbottabat - Pakistan, 26-28 August 2007)


Oleh : Widodo Brontowiyono, Andik Yulianto, Silvia Utami, Ribut Lupiyanto
(Proceedings of 1st International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE), Universitas Sebelas Maret Solo, 21-22 March 2009)
The more densely populated Yogyakarta, particularly the settlement along the river banks of Code, Gajahwong, and Winongo, has raised a new problem due to the dwellers habit of throwing their domestic waste into the river. It is because the area is not covered by the centralized wastewater treatment system, and it is unlikely to build the individual wastewater treatment system. Consequently, the river water quality is degrading. One of the methods to solve this problem is the use of communal wastewater treatment plant.  Analyses indicate that this communal system has been useful for the dwellers. They understand and agree about the existence of the plant and involve themselves in its construction. The dwellers usually throw away mixed wastewater from the bathroom, laundry, kitchen, toilet, and rotten leftovers. However, not all communal systems are managed well, and not all dwellers can take advantage of the plant due to the factors of economy, distance, and technical position of their houses that it is not possible yet to use the system. Technically, the communal system should be an effective way to decrease the level of domestic waste pollutant - Ammoniac, BOD, COD, and TSS – although most of the effluent quality is not satisfying yet. The common problems in system are clogging, unpleasant odor, overflow from the manhole when raining, poor project operation, biogas-reactor leakage, and undersized exhaust pipes. The communal system with the highest efficiency is located in Serangan, while the one with the lowest efficiency is sited in Wirogunan due to the malfunction UASB installation.
Keywords: communal, wastewater, Yogyakarta
Oleh : Widodo Brontowiyono, Donan Wijaya, Ribut Lupiyanto
(Proceedings of The First International Seminar on Sicience and Technology, Islamic University of Indonesia (UII) – Universiti Kebangsaan Malaysia-  Universiti Malaysia Trengganu, 24-25 Januari 2009)

Climate change is a natural phenomenon that can change human life. It causes various negative effects, from natural disaster, like floods, storms, rain pattern change, sea water table raise, to the threat of coastal area submersion. Climate change is simply an effect of the increasing concentration of green house gases in the atmosphere accumulated from pollutants in the air, causing an average temperature raise on the earth surface. In an urban area, 75% of pollutants are from vehicle emission. An effort to reduce these pollutants is required through a green space approach. According to Regional Planning Law No. 26 Year 2007, the minimum extent of green space is 30% of the area extent. The existing condition in Yogyakarta that has 3.250 Ha area and high population density, i.e. 16,098 People/Km2 indicates insufficiency of green space, which is only 4.6%. Based on the analysis of oxygen requirement, the required green space for Yogyakarta is 6.447 ha or twice the area extent. Consequently, a preventive, proactive step is required to find a comprehensive, fast, proper solution for this environmental degradation problem, so that the domino effects can be minimized.
Key Words: Green Space, Climate Change, Global Warming, Environment, Yogyakarta
Oleh : Widodo Brontowiyono, Ribut Lupiyanto, Donan Wijaya
(Proceedings of The First International Seminar on Sicience and Technology, Islamic University of Indonesia (UII) – Universiti Kebangsaan Malaysia-  Universiti Malaysia Trengganu, 24-25 Januari 2009)
Conflicts of interest among countries have made the effort of comprehensive global warming mitigation difficult to achieve. The most effective mitigation is then minimizing the impacts at the local level. Cities have been the biggest contributor of air pollution; hence, improvements of its ecology are significant for the mitigation. Disorganized condition in cities urges revitalization. This revolutionary effort will not be optimum without a participative action and economic-development orientation. In the case of Tegalpanggung-Yogyakarta, a slum, densely built-up area, revitalization takes into account the variety of land status and its economic value. There are two types of revitalization, i.e. revitalization in dominantly proprietary area with high economic value and low economic value. Vertical revitalization is designed to develop multistory houses in line with the program of State Ministry of Housing and Public Works Department. The unoccupied settlement area is transformed into a green space, while the inhabited one is arranged with green-architecture concept. Some recommendations of green architecture are green roof, green fence, empty-land gardening, hanging garden, and closed-area grass-blocking. All the process is designed and approved by the dwellers. Green settlement area revitalization in Tegalpanggung is a part of the grand design to develop Code River Walk Ecotourism for improving the economy of the community.
Keywords: global warming, urban kampong, Tegalpanggung, Code, Yogyakarta