Judul: Estimasi Willingness To Pay Air Tanah dan Air Pipa di Desa Tamansari, Kecamatan Tamansari, Kabupaten Bogor
Abstrak: Water is a natural resource that absolutely necessary for human and other live beings, therefore the existence and quality of water resources should be maintained. However, in line with population growth, the need for clean water is also increasing. Taman Sari village is an area that does not flowing PDAM waterways, so that during the dry season the water crisis. Therefore, the government launched the program of water supply pipelines originating from Mount Salak. The purpose of this research were to estimate the willingness to pay (WTP) the Castle Village community as an appreciation of the services of groundwater and the factors that influence, to estimate the willingness to pay (WTP) to obtain the Castle Village community in order to obtain the service of clean water supply and factors that influence it and analyze reliability of the Contingent Valuation Method (CVM) in determining the willingness to pay the villagers of the Castle to pay in order to get clean water. Observations and interviews were conducted to the Castle Village community who still use groundwater wells and taken by purposive sampling method. The Result showed that the average value of ground water WTP per household per month was IDR 414.71/m3 per household per month and the factors that affect the value of the significant WTP were age, education level, and the amount of water usage. Whereas, the average value of WTP on water pipes was IDR 575/m3 per household per month as well as the factors that affected the value of the significant WTP were age, income level, number of dependents and the amount of water usage. Reliability test using Cronbach Alpha method to get a value of 0.640, which means reliable.
Keyword: willingness to pay, test reliability, clean water crisis, CVM

Judul: Willingness to Pay Analysis and Strategy for Fulfilling Community Needs for Clean Water in Setrorejo Village, Baturetno District, Wonogiri Regency
Abstrak: Desa Setrorejo merupakan salah satu desa di Kecamatan Baturetno yang masyarakatnya masih mengandalkan air tanah sebagai sumber air dalam kehidupan sehari-harinya. Desa Setrorejo yang wilayahnya merupakan kawasan karst dan perbukitan menyebabkan terdapat beberapa permasalahan dalam sumberdaya air. Permasalahan sumberdaya air yang terjadi yaitu kualitas air yang kurang baik dan penurunan kuantitas air saat musim kemarau. Tujuan dari penelitian ini adalah mengestimasi besarnya nilai Willingness to pay (WTP) masyarakat terhadap air bersih dan mengidentifikasi faktor-faktornya serta menganalisi strategi pemenuhan kebutuhan air bersih untuk masyarakat. Metode pada penelitian ini adalah analisis willingness to pay menggunakan CVM, analisis regrsi logistik, dan Analitycal Hierarchy Process (AHP). Hasil penelitian menunjukkan nilai WTP yang didapatkan sebesar Rp 4.478. Faktor-faktor yang berpengaruh signifikan terhadap keputusan membayar ialah nilai penawaran, pendapatan, dan kualitas air tanah. Alternatif strategi yang dapat dilakukan dalam pemenuhan kebutuhan air bersih yaitu pengembangan infrastruktur air yang dapat dilakukan melalui pengembangan ditribusi jaringan PDAM. Nilai WTP yang didapatkan lebih besar dari nilai penawaran terendah yang berupa tarif PDAM dengan pemakaian air sampai 10m3 menggambarkan masyarakat bersedia melakukan perbaikan kualitas lingkungan dengan pendekatan pemasangan jaringan PDAM., Setrorejo village is one of the villages in Baturetno District where the people relies on groundwater as a source of water in their daily lives. Setrorejo village whose territory is a karst and hilly area causes several problems in water resources. Water resource problems that occur are deficient water quality and decrease water quantity during the dry season. The aims are to estimate the value of Willingness to Pay towards a clean water and indentify the factors and analyze the strategy for fulfillment the needs of clean water for the people. Methods that used in this research are willingness to pay using CVM, logistic regression analysis, and Analytical Hierarchy Process (AHP). The results in this research show that the obtained WTP value was IDR 4.475. The factors that have an significant influence are bid value, income, and groundwater quality. An alternatif strategy that can be done to fulfillment the need for clean water is the development of water infrastructure which can be done by developing the distribution of PDAM. The obtained WTP value is bigger that the lower bid value in the form of a PDAM tariff with water usage up to 10m3 illustrates that the people is willing to improve environmental quality by PDAM installation approach.
Keyword: CVM, AHP, PDAM, Logistic regression

Judul: Sintesis dan Pencirian Kompleks Fe(III)-Kuersetin
Abstrak: Quercetin belongs to flavonols which is able to chelate metal ions. Quercetin may chelate metal ions at 3’,4’-catechol, 3- or 5-hydroxycromone sites. In this study, quercetin was complexed with Fe(III). The complex with Fe(III) ions from FeCl3·6H2O was more stable than the complex derived from Fe(NO3)3·9H2O. The quercetin was yellow in color and showed maximum wavelengths (λ􀭫􀭟􀭶) at 250 and 370 nm. The Fe(III)-quercetin complex from Fe(NO3)3·9H2O was yellowish green with 􀟣􀭫􀭟􀭶 at 280 and 420 nm, whereas that from FeCl3·6H2O was dark green with 􀟣􀭫􀭟􀭶 at 280 and 430 nm. The 􀟣􀭫􀭟􀭶 shift indicated that the complex was formed at 3-hydroxychromone site. The Fe(III)- quercetin complex was formed with 1:1 metal-ligand mole ratio based on atomic absorption spectrophotometry analysis and the X-ray diffractogram showed that the crystallinity of the complex was 37%.
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