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"The groundwater problem at Mae Moh mine has drawn attention as the mining excavation goesdeeper, thus resulting in detailed investigation of hydrogeological condition. One of the problemsfacing the mining is floor heave influenced by groundwater. The control of groundwater pressure indeep-seated aquifers with high elevation becomes important in the mining. In addition, theunderground water at Mae Moh mine is naturally contaminated by arsenic. Therefore, thedevelopments of 3D groundwater model of deep pit mine using Modflow simulation and thestudies of underground water treatment are needed for the future planning. The predictivesimulations were carried out for eight years (2007 to 2015). Because stability of the Mae Moh mineshows how can be closely linked to the water environment, this paper aims to report the field Visitsto the water related facilities of the mine, which were conducted during 2010-2013. The resultreveals that the potentiometric head level is strongly increased, which might be a potential risk forthe floor heave; thus, depressurization is required. Field measurements reveal pH level at 8 and arange of total dissolved solid (TDS) at 870-2020 ppm. Treatment efficiency shows that more than95% of the arsenic can be successfully removed using ferric chloride."

"Penelitian ini dilaksanakan dikarenakan adanya permasalahan tidak dipatuhinya baku mutu pH air asam tambang oleh PT. X. Penelitian ini dilakukan dengan menggunakan pendekatan evaluasi kinerja pengelolaan air asam tambang PT. X di Kalimantan Tengah, pengukuran kualitas air keluaran tambang dengan uji Storet, dan wawancara mendalam kepada masyarakat pemanfaat perairan. Hasil penelitian ini menunjukkan komponen pembentuk air asam tambang berupa batuan Potentially Acid Forming PAF diketahui sebesar 50 terdapat pada tambang PT. X dan sudah dikelola dengan baik melalui meminimasi sumber air asam tambang dengan penanganan bahan PAF atau Non Acid Forming NAF secara selektif, pengendalian migrasi air asam tambang, dan pengolahan air asam tambang. Kualitas air keluaran tambang pada titik pantau SP-HJ-03 termasuk dalam status kualitas air A atau dalam kondisi baik sekali, sedangkan kualitas air keluaran tambang pada titik pantau SP-HJ-04 termasuk dalam status kualitas air B atau dalam kondisi baik. Gatal-gatal yang diderita pada 44 responden hanya 3 keluhan yang tercatat secara resmi di Puskesmas Desa Tumbang Bauh , diduga bukan diakibatkan oleh air keluaran tambang PT. X.

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This research conducted due to the problem of non compliance of water quality standard pH of acid mine drainage by PT. X. This research conducted by using performance evaluation approach of acid mine drainage management of PT. X in Central Kalimantan, measuring the quality of mine water effluent by Storet test, and in depth interviews to the water users around the mine site. The results showed that the acid mine drainage components is Potentially Acid Forming PAF rocks was found 50 in the PT. X and is well managed by minimizing acid mine water sources by selectively handling of PAF or Non Acid Forming NAF materials, controlling acid mine drainage migration, and acid mine drainage treatment. The water quality effluent of SP HJ 03 monitoring point is A status meaning that the water quality is in excellent condition and compliaded with the water quality standards, while the water quality effluent of SP HJ 04 monitoring point is B status which means the water quality is in good condition and in the category of mild contamination. Skin health issues of 44 respondents only 3 of complaints are officially recorded at Tumbang Bauh Village Health Center possibly not caused by acid mine water of PT. X."

"Penelitian mengenai kualitas air di Saluran Tarum Barat dilakukan di tiga stasiun yang merepresentasikan bagian awal, tengah, dan akhir pada bulan Februari hingga Mei 2017. Penelitian ini bertujuan untuk mengetahui kualitas dari Saluran Tarum Barat dengan menggunakan makroinvertebrata bentik sebagai bioindikator melalui metode Biological Monitoring Working Party-Average Score Per Taxon BMWP-ASPT. Tidak hanya sampel makorinvertebrata, parameter lingkungan juga turut diukur. Hasil penelitian diperoleh enam famili makroinvertebrata yaitu Naucoridae, Viviparidae, Parathelphusidae, Pisauridae, Palaemonidae, dan Thiaridae. Famili Parathelphusidae dan Pisauridae tidak terdapat dalam daftar skoring BMWP. Saluran Tarum Barat memiliki rentang nilai ASPT 4,25-4,5 yang termasuk dalam kategori tercemar sedang.

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An assessment of water quality in Saluran Tarum Barat has been conducted at three stations representing the beginning, middle, and end of the canal from February until May 2017. This research aimed to determine the quality of Saluran Tarum Barat using benthic macroinvertebrates as bioindicator through Biological Monitoring Working Party Average Score Per Taxon BMWP ASPT method. Not only samples of organisms were taken, but environmental parameter also measure.

The results obtained were six families of macroinvertebrates namely Naucoridae, Viviparidae, Parathelphusidae, Pisauridae, Palaemonidae, and Thiaridae. However, Parathelphusidae and Pisauridae families are not covered in BMWP scoring list. Saluran Tarum Barat has ASPT range from 4,25 ndash 4,5 which categorized as moderate pollution."

"With an increasing population, the effects of climate change and limited water resources, water reuse is an option that must be explored in order to reduce the high water stress in Indonesia. This study aims to identify enablers of, barriers to, and opportunities for early adopters of water recycling in the business sector of the Greater Jakarta region of Indonesia, and to highlight the possibilities of its wider implementation in order to reduce water stress. Semi-structured interviews, desk reviews, and observations were conducted with eight enterprises. Most respondents demonstrated that their main purpose for recycling water is to reduce costs. Recycled water was mostly used where there are minimal possibilities of direct contact with people to reduce the impact of social barriers. While the absence of a clear legal framework was identified as another barrier to water recycling implementation, this can also serve as an enabler. The decrease in raw water quality makes water recycling a cost-effective solution. Considering all findings, water recycling in Indonesia has great potential to be more widely applied and to be supported by related stakeholders."

"Sebagai negara yang memiliki sumberdaya air yang melimpah, Indonesia perlu menggunakan konsep Pengelolaan Sumberdaya Air Terpadu (Integrated Water Resources Management) dalam mengelola sumberdaya air. Berawal dari berbagai hasil konferensi yang melibatkan berbagai negara dunia yang ikut serta dalam menyelenggarakan konferensi tersebut dan membahas poin-poin terkait dengan pengelolaan sumberdaya air, kemudian diadopsi oleh Indonesia dengan diterbitkannya Peraturan Undang-Undang yang menyesuaikan kondisi Indonesia dan sumberdayanya. Tercatat bahwa Indonesia mengalami beberapa kali perubahan terkait pengaturan air, seperti misalnya dengan pemberlakuan Undang-Undang No. 11 Tahun 1974 tentang Pengairan, Undang-Undang No. 7 Tahun 2004, dan Undang-Undang No. 17 Tahun 2019 tentang Sumber Daya Air. Akan tetapi, seriring dengan berjalannya waktu, dengan dikeluarkannya undang-undang tersebut, berbagai anggapan dan permasalahan timbul sehingga peraturan tersebut dinilai tidak lagi sesuai dengan amanat dari Pasal 33 Undang-Undang Dasar Negara Republik Indonesia Tahun 1945. Dalam implementasi dari konsep tersebut, terdapat hal-hal yang menjadi kendala atau permasalahan dalam mengelola sumberdaya air sehingga konsep Pengelolaan Sumberdaya Air Terpadu ini tidak berjalan sebagaimana maksud dan tujuan awal. Oleh karena itu, perlu adanya pembaharuan terkait Peraturan Undang-Undang dan berbagai peraturan sejenisnya yang mengatur secara komprehensif terkait dengan sistem Pengelolaan Sumberdaya Air Terpadu yang diterapkan di Indonesia agar hasil atau tujuan akhir dalam konsep ini dapat tercapai dengan hasil yang lebih optimal, dikarenakan dalam hal ini air memegang peranan penting dalam perekonomian serta kesejahteraan rakyat dalam skala nasional.

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As a country that has abundant water resources, Indonesia needs to use the concept of Integrated Water Resources Management in managing water resources. Starting from the results of various conferences involving various world countries that participated in holding the conference and discussing points related to water resource management, Indonesia was later adopted by the issuance of laws and regulations that adapted the conditions of Indonesia and its resources. It is noted that Indonesia has undergone several changes related to water regulation, for example with the enactment of Law no. 11 of 1974 concerning Irrigation, Law no. 7 of 2004, and Law no. 17 of 2019 concerning Water Resources. However, over time, with the issuance of the law, various assumptions and problems arise so that the regulation is considered no longer in accordance with the mandate of Article 33 of the 1945 Constitution of the Republic of Indonesia. In the implementation of the concept, there are things -Things that become obstacles or problems in managing water resources so that the concept of Integrated Water Resources Management does not work as intended and intended initially. Therefore, there is a need for reforms related to laws and regulations and various similar regulations that comprehensively regulate the Integrated Water Resources Management system implemented in Indonesia so that the final results or goals in this concept can be achieved with more optimal results, because in terms of in this case, water plays an important role in the economy and people's welfare on a national scale."

"Kota Metro merupakan salah satu kota dengan tingkat pelayanan air perpipaan yang rendah (5,05%), sehingga sebagian besar masyrakatnya menggunakan air tanah dengan sistem self-supply. Akan tetapi, keamanan sistem sumber self supply saat ini menjadi isu di masyarakat. Metode continuous monitoring dari April – Oktober 2021 melalui telepon setiap bulan dilakukan untuk membantu penilaian tingkat layanan air minum. Tujuan dari penelitian ini adalah menganalisis variabilitas sumber air bersih dan air minum, menganalisis variabilitas tingkat pelayanan air minum yang dipersepsikan aman, menganalisis variabilitas biaya operasional dan pengelolaan layanan sumber air minum di rumah tangga, dan menganalisis intervensi pengolahan air minum di rumah tangga untuk meningkatkan kualitas air minum. Analisis dilakukan dengan analisis statistik deskriptif dan software SPSS 24 untuk uji Regresi Logistik Biner. Hasil menunjukkan 97% sumber air masyarakat Kota Metro adalah sumber air self-supply, yang didominasi oleh sumur gali tak terlindungi milik pribadi (45% sumber air bersih dan 30% sumber air minum). Berdasarkan persepsi rumah tangga (keamanan, rasa, penampilan, bau, keandalan, dan ketersediaan air minum), air isi ulang dan air kemasan memiliki tingkat keamanan paling konsisten selama 6 bulan survei (100%). Sistem non-self-supply diketahui lebih aman dari sistem self-supply dengan persentase 98% dan 95%. Variabel kejadian banjir diketahui signifikan terhadap penilaian tingkat pelayanan sumber air minum yang dipersepsikan aman dengan peluang 0,059 kali dalam mempengaruhinya. Rata-rata biaya yang dibutuhkan untuk maintenance mesin pompa adalah Rp 683.750,00 dan untuk maintenance lainnya (pipa, kran air, dll) sekitar Rp 85.833,00 per rumah tangga. Sedangkan biaya yang dihabiskan oleh 1 rumah tangga dalam 1 minggu untuk air isi ulang adalah sekitar Rp 19.751,00, sedangkan untuk air kemasan sekitar Rp 40.986,00. Variabel yang mempengaruhi biaya air minum adalah pengolahan air dengan perebusan yang berpeluang 0,029 kali. Berdasarkan persepsi rumah tangga, masalah sumber air minum yang paling banyak terjadi pada sumber air baku adalah penampilan (29,4%) dan bau (28,3%), serta kadar E.coli (72%) pada air minum. Dengan demikian, dibutuhkan intervensi strategi pengolahan air minum untuk mengatasi permasalahan yang ada dan meningkatkan kualitas air minum. Adapun intervensi pengolahan air minum yang direkomendasikan untuk menyelesaikan masalah tersebut adalah Slow Sand Filter (SSF) dengan media tambahan berupa Granular Activated Carbon (GAC) serta unit disinfeksi sinar UV.

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Metro City is one of the cities with a low level of piped water service (5,05%), so that most of the people use groundwater with a self-supply system. However, the safety of the self-supply source system is currently an issue in society. A continuous monitoring method from April – October 2021 by telephone every month was carried out to help assess the level of drinking water services. The purpose of this study are to analyze the variability of clean water and drinking water sources, to analyze the variability of the level of drinking water services that are perceived as safe, to analyze the variability of operational and maintenances costs of drinking water facility in households, and to analyze the intervention of drinking water treatment in households to improve the quality of drinking water. The analysis was carried out using descriptive statistical analysis and SPSS 24 software for the Binary Logistics Regression test. The results show that 97% of Metro City's water sources are self-supply water sources, which are dominated by private unprotected dug wells (45% for clean water sources and 30% for drinking water sources). Based on household perceptions (safety, taste, appearance, smell, reliability, and availability of drinking water), refill and bottled water had the most consistent level of safety during the 6 months of the survey (100%). Non-self-supply systems are known to be safer than self-supply systems with a percentage of 98% and 95%, respectively. The flood incident variable is known to be significant to the assessment of the service level of drinking water sources that are perceived as safe with a 0,059 times chance of influencing it. The average cost required for pump engine maintenance is Rp 683.750,00 and for other maintenance (pipes, water faucets, etc.) it is around Rp 85.833,00 per household. Meanwhile, the cost spent by 1 household in 1 week for refill water is around Rp 19.751,00, while for bottled water it is around Rp 40.986,00. The variable that affects the cost of drinking water is water treatment by boiling which has a chance of 0.029 times. Based on household perceptions, the most common drinking water source problems that occur in raw water sources are appearance (29,4%) and smell (28,3%) and E.coli (72%) in drinking water. Thus, intervention strategies for drinking water treatment are needed to overcome existing problems and improve drinking water quality. The recommended drinking water treatment intervention to solve this problem is the Slow Sand Filter (SSF) with additional media in the form of Granular Activated Carbon (GAC) and UV disinfection unit."

"Pada abad ke-18, Kota Batavia mengalami permasalahan air seperti pencemaran sungai dan kekurangan sumber air bersih. Penyebabnya adalah faktor alam seperti daerah Batavia yang pada dasarnya merupakan area rawa dan erupsi Gunung Salak pada tahun 1699. Selain itu, ada faktor manusia seperti pembuangan limbah, sampah dan kotoran oleh penduduk ke Sungai Ciliwung serta masifnya pembangunan pabrik tebu di masa itu. Pemerintah Kota Batavia berusaha mengatasi permasalahan ini dengan membuat sistem saluran air yang dapat menampung dan mengalirkan air bersih atau waterleiding. Salah satu hasil pembangunan tersebut yaitu temuan waterleiding yang berada di Jalan Pintu Besar Selatan. Penelitian ini bertujuan untuk mengetahui tentang struktur waterleiding di Jalan Pintu Besar Selatan. Metode yang digunakan yaitu pengumpulan data, pengolahan data, analisis data, dan interpretasi data. Hasilnya adalah bentuk bak penampungan air adalah jajar genjang dan pipa terakota berbentuk bundar atau silinder. Pipa terakota dilindungi dengan bata kuning dan bata merah. Fungsi waterleiding adalah untuk menyalurkan air tawar di Kota Batavia, memenuhi kebutuhan air bersih pada masa tersebut.

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In the 18th century, Batavia experienced water problems such as river pollution and a lack of clean water sources. The causes are natural factors such as the Batavia area which is basically a swamp area and the eruption of Mount Salak in 1699. Apart from that, there are human factors such as the dumping of waste, rubbish and dirt by residents into the Ciliwung River and the massive construction of sugar cane factories at that time. The Batavia City Government is trying to overcome this problem by creating a water channel system that can accommodate and distribute clean water or water flow. One of the results of this development is the discovery of water leiding which is located on Jalan Pintu Besar Selatan. This research aims to find out about the waterleiding structure on Jalan Pintu Besar Selatan. The methods used are data collection, data processing, data analysis, and data interpretation. The result is that the shape of the water reservoir is parallelogram and the terracotta pipe is round or cylindrical. Terracotta pipes are protected with yellow bricks and red bricks. The function of waterleiding is to distribute fresh water in the City of Batavia, meeting the need for clean water at that time."

"ABSTRAKDaerah Aliran DA Ci Salak dan Ci Sahang merupakan wilayah yang secara geologis memiliki potensi tambang pasir yang tersebar di kaki hingga lereng Gunung Tampomas. Penelitian ini bertujuan untuk menganalisis pengaruh penambangan terhadap penutup lahan dan sumber daya air di DA Ci Salak dan Ci Sahang. Metode overlay dan wawancara dengan metode insidental sampling untuk analisa penutup lahan dan sumber daya air. Hasil penelitian menunjukkan sejak tahun 1988-2016 luas total area yang ditambang sebesar 526,3 Ha dengan arah perkembangan tambang dari barat ke timur. Pertambangan dilakukan pada ketinggian antara 500-1000 mdpl dengan kemiringan lereng 0-8 hingga 25-45 . Area tambang lebih dominan dilakukan pada penutup lahan ladang dan lahan terbuka, jenis tanah regosol, serta jenis batuan lava Qyl dan tuff berbatu apung Qyt . Pengaruh penambangan terhadap kualitas mata air adalah dengan meningkatnya konsentrasi kekeruhan dan phosphat, sedangkan peningkatan konsentrasi TSS dan Fe terjadi di saluran air di sekitar tambang. Penurunan kuantitas akibat penambangan berupa berkurangnya jangkauan air yang mengairi sawah dan ladang serta untuk kebutuhan rumah tangga di 10 sepuluh kampung di sekitar DA Ci Salak dan Ci Sahang dengan radius terdekat terdekat 500m dan radius terjauh 2000m dari mata air.

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ABSTRACTCi Salak and Ci Sahang watershed are geologically potential areas of sand mining, which spread over the foothill of Mount Tampomas. This study aims to analyze the effect of mining on land cover and water resources in Ci Salak and Ci Sahang watershed. Overlay methods and interviews using incidental sampling methods were used in this study for analysis of land cover and water resources. The results show that since 1988 2016 the total area of mining reached to 526.3 Ha with the direction development of the mining from west to east. Mining is done at an altitude between 500 1000 mdpl with a slope of 0 8 to 25 45 . Mining areas are dominant to change the fields small holder land use and bare soil, regosol soil types and lava Qyl and Pumiceous Tuff Qyt rock types. The effect of mining on the quality of water springs can be seen by the increasing of the turbidity concentration and phosphat, while the increase of TSS and Fe concentration occurs in the water channel around the mining area. The decrease of water quantity due to mining result in the decrease of water coverage which irrigates the paddy fields and small holder, including for the household needs for 10 ten villages around Ci Salak and Ci Sahang watershed, with nearest radius at 500m and the farthest radius at 2000 m from springs"

"Air permukaan adalah salah satu sumber air baku untuk air minum, namun sangat rentan terhadap pencemaran. Masalah riset ini adalah tercemarnya air Saluran Tarum Barat (STB) menyebabkan kualitas air STB melebihi baku mutu sehingga menimbulkan tekanan pada proses pengolahan air minum yang akan berdampak pada peningkatan tarif air minum PAM Jaya. Tujuan akhir riset adalah menyusun strategi keberlanjutan pengelolaan kualitas air STB sebagai air baku untuk air minum. Metode riset menggunakan metode gabungan. Metode analisis menggunakan statistik deskriptif, regresi, dan SWOT. Hasil riset ini yaitu kualitas air STB melebihi baku mutu dan memberikan pengaruh terhadap tarif air. Disisi lain, Ability to Pay (ATP) dan Willingness to Pay (WTP) responden terhadap air perpipaan tergolong tinggi. Strategi keberlanjutan pengelolaan kualitas air STB perlu didukung oleh seluruh pemangku kepentingan melalui kerja sama dan koordinasi yang kuat. Kesimpulan riset adalah strategi pengelolaan kualitas air STB yang tepat dapat menghindari peningkatan tarif air dan meningkatkan pemenuhan kebutuhan air masyarakat Jakarta.

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Surface water is one of the raw water sources for drinking water, but it is vulnerable to pollution. This research problem is that the contamination of West Tarum Canal (WTC)’s water causes its water quality to exceed the quality standard, thus causing pressure on the drinking water treatment process, which will increase PAM Jaya’s water tariffs. The final objective is to formulate the sustainability strategy for Water Quality Management (WQM) of WTC as raw water. This research method is a mixed-method. The analysis method used descriptive-statistics, regression, and SWOT. This research shows that WTC’s water quality exceeds the quality standard and affects water tariffs. Ability to Pay (ATP) and Willingness to Pay (WTP) of respondents for piped water are high. The sustainability strategy for WTC’s WQM needs to be supported by stakeholders through strong cooperation and coordination. The conclusion is the appropriate WTC’s WQM strategy can avoid increasing water tariffs and increasing Jakartans’ water needs fulfillment."