Limited capacity of government on drinking water supply has demanded the implementation of Community Based Water Supply System, one of them in the form of a Drinking Water User Association (Hippam). An important issue in community-based water supply is sustainability, from which institutions play a critical factor in the sustained provision of drinking water. Institutions relate to management, maintenance and financing systems, and contribute to technology selection and decision making. The purpose of this study is to explore the institutional conditions as a determinant factor for the sustainability of community-based water management. The study also aims to develop a framework for sustainable institutional assessment in community-based drinking water supply. In this study Hippam Mandiri Arjowinangun (HMA) in Malang City, East Java Province was chosen as a case study. HMA has been operating since 1994. The sustainability of HMA regarding applying the principles of institutional support for sustainability was very interesting as a case. The research method applied qualitative research by comparing the benchmark of institutional principles of sustainability with institutional principles applied to HMA. The result shows that HMA has applied the principles of institutional support for sustainability. However, some issues should be addressed in the HMA sustainability include the delineation of the water source boundary, specific attributes for the users, and the rules of water utilization. The study has also produced an assessment framework for the sustainability of community-based drinking water supply systems from the institutional perspective.
Peningkatan jumlah penduduk akan berdampak pada penambahan jumlah kendaraan khususnya kendaraan pribadi. Jalan MT.Haryono pada segmen simpang beruang madu-jembatan DAM memiliki nilai Volume Capacity ratio sebesar 2,74 (ruas 1) dan 1,99 (ruas 2) atau tingkat pelayanan F, sehingga dalam mengatasi masalah tersebut ditawarkannya konsep Electronic Road Pricing (ERP). Penelitian bertujuan untuk memodelkan probabilitas perpindahan pengguna jalan terhadap adanya konsep ERP, dengan tahapan penelitian mengestimasi nilai ERP yang akan diterapkan melalui continent valuation method (CVM) dengan variabel yang digunakan adalah Ability To Pay (ATP) dan Willingness To Pay (WTP) dari pengguna jalan. Setelah dilakukannya pengolahan data penawaran harga WTP kepada pengguna kendaraan pribadi yang selanjutnya akan dilakukan perhitungan estimasi harga ERP, sehingga didapatkan estimasi ERP dari WTP yaitu untuk kendaraan mobil pribadi sebesar Rp 17.746,- dan sepeda motor sebesar Rp 16.946,- untuk setiap kali melewati ERP dengan kecepatan tertentu
Supit Urang landfill is landfill that collected and used methane as an alternative energy source. Methane gas was produced by garbage in dumped in landfill which undergo decay and under certain conditions. Therefore, the main purpose of this study is to measure the GHG emission reduction from the landfill through scavenging and distribution methane gas as alternative energy. The reduced waste tonnage was calculated for its GHG emission using methane emission calculation formula proposed by IPCC. Scavengers in Supit Urang landfill contribute to reduce 2, 3 % of paper, plastic and glass for about 0, 23 %, 0, 88 % and 0, 72 % respectively. The fraction of degradable waste sorted by the scavenger contribute to the GHG emission reduction for about 0.12 %. In 2018, estimate of potential methane gas are 5 828,90 ton CH 4 and it will distribute to 319 households surrounding Supit Urang landfill as a fuel to cook. Manage the methane can reduce the risk of gas explosion and also can be solution to solve crisis of energy. Methane is a renewable energy, but just 0,7 % from total methane gas from Supit Urang Landfill that used by public.
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