Regional Water Company Research Articles

Groundwater spring potential assessment using new ensemble data mining techniques

The growing demand and exigency for groundwater resources warrant the demarcation of groundwater spring potential zones (GSPZ) for effective sustainable strategy in groundwater identification, conservation, and management. Here we utilized a novel data mining (DM) ensemble to generate groundwater spring potential maps (GSPMs) by combining RF-BRT (random forest-boosted regression tree), MARS-SVM (multivariate adaptive regression spline-support vector machine) and, FDA-GLM-MDA (functional data analysis-generalized linear model-mixture discriminant analysis). Initially, an aggregate of 1726 groundwater spring locations was collected from the regional water company of Tehran Province and field investigation, in which 1208 springs (70%) were taken for training purposes and the remaining 518 (30%) springs were applied for the validation process. Twelve conditioning factors including DEM (digital elevation model)/elevation, fault density, aspect, rainfall, distance from rivers, distance from faults, slope, MRVBF (multiresolution index of valley bottom flatness), TWI (topographic wetness index), lithology, land use/land cover, and permeability were utilized for mapping process and their importance in predicting the groundwater spring potential. The variable importance (VI) analysis using SVM (support vector machine) reveals that the most significant conditioning factors in the prediction process are rainfall, TWI, DEM-elevation, distance from rivers, slope, distance from faults, and MRVBF. The GSPMs generated from novel data-mining (DM) ensembles were validated using the cut-off reliant (recall, fallout, F-measure, accuracy, precision, specificity, TSS: true skill statistic, Cohen’s kappa, fourfold plot, CCI: corrected classified instances) and cut-off independent (ROC-AUC: receiver operating characteristic-area under the curve) measures. The outcome of the validation measures shows that RF-BRT has the superior values of recall, F-measure, overall accuracy, precision, specificity, TSS, Cohen’s kappa, fourfold plot, CCI followed by MARS-SVM, and FDA-GLM-MDA whereas the AUC value of RF-BRT (0.955), MARS-SVM (0.934), and FDA-GLM-MDA (0.914) also display similar result. The GSPMs generated using the novel DM ensemble models in our study can be utilized by policymakers in implementing the strategies for effective land use planning and sustainable groundwater management.

Effects of Growth & Learning and Internal Business Processes on Financial Performance (Survey of Regional Water Company (PDAM) in Java)

Effects of Growth & Learning and Internal Business Processes on Financial Performance (Survey of Regional Water Company (PDAM) in Java)

Pengaruh Kepemimpinan Transformasional, Lingkungan Kerja Fisik dan Disiplin Kerja terhadap Kinerja Pegawai pada Perusahaan Daerah Air Minum (PDAM) Puruk Cahu

PDAM Puruk Cahu district Moody highway is Companies engaged in the services the provision of clean water. One of them the purpose in the form of a PDAM is sufficient needs community will clean water , covering provision, development service means and infrastructure and distribution of clean water , medium aim others is come along and develop economy use support development area with expand field work , as well looking for profit as source main financing for area Research this aim for test influence Transformational Leadership (X1), Physical Working Environment (X2) and Work Discipline (X3) against Performance Employee (Y) on Regional Water Company (PDAM) Puruk Cahu sea way partial or simultaneously . Sample taken as much 24 employee using saturated sampling technique . Collecting data using questionnaire while analyst is using data Analysis Regression Multiple Linear through SPSS version 23 program . Results testing prove Trasnformasional Leadership significant effect on Employee Performance partially with big influence of 5,6%, Physical Work Environment significantly influence to Performance Employees partially with the influence of 48,7%, Work Discipline significantly influence Performance Employees partially with a large influence 41,1% while simultaneously Transformational Leadership, Physical Work Environment and Work Discipline has a significant effect on Employee Performance with a large influence of 73,6% including very strong category while the remaining 26,4% is influenced by other variables. Keywords: Leadership Transformasional, Lingkaungan Physical Work, Work Discipline and Employee Performance

The impact of earthquake on clean water demand and supply at North Lombok regency, Indonesia

An earthquake of magnitude 6.4 Mw hit Lombok, Indonesia in July 2018, followed by another 6.9 Mw earthquake magnitude in less than a month in August 2018. The earthquake caused fatalities and damage to infrastructures, including the facilities of clean water. The main objective of this study is to know the impact of the earthquake towards clean water facilities damage, and to analyse clean water demand and supply after earthquakes in North Lombok Regency. Another purpose is to propose disaster mitigation to be implemented in the other disaster prone regions of Indonesia. The primary data were collected through field survey and questionnaire samples of 110 respondents. Secondary data regarding the damage of clean water network were collected from the Regional Water Company (PDAM) of North Lombok. The results of this study show that many clean water facilities were damaged due to earthquake. The amount of clean water demand in Lombok Island after the earthquake was decreased by 19.03%. The number of wells users after the earthquake increased from 22.73% to 57.27%. The potential groundwater for clean water in the Lombok Island is more than sufficient to fulfil the requirement of clean water during disaster. However, further studies are required to realize such idea.

Identification of Factors Affecting the Burnout in the Employees of Ardabil Regional Water Company and Providing Solutions Using the System Dynamics Method

Identification of Factors Affecting the Burnout in the Employees of Ardabil Regional Water Company and Providing Solutions Using the System Dynamics Method

Analysis of Company Performance Measurement using the Balanced Scorecard Method

This study aims to determine how the performance of the Regional Water Company of Sleman Regency by using the Balanced Scorecard method viewed from a financial perspective, customer perspective, internal business process perspective, and learning and growth perspective. The results of the study show that the performance of the Regional Water Company of Sleman Regency in 2015-2017 can be said to be good, and included in the "healthy" category, with a total performance value of 3,035 in 2015; 3,110 in 2016; and 3,480 in 2017

Study of the physical quality of shallow ground water in Palu valley for drinking water

Water is a basic need in various human activities. drinking water for general purposes is generally supplied by the Regional Water Company (RWC), but RWC’s ability to meet the needs of the community is felt to be limited. Potential groundwater around a large residential area and has been widely used for drinking water, this study aims to determine the physical quality of water and shallow groundwater classes in the Palu valley. By using laboratory analysis of shallow groundwater samples taken randomly in the existing Palu Valley where people use shallow ground water as a source of drinking water. The results of the study that the physical quality of shallow ground water in the Palu Valley meets the physical requirements of drinking water and includes class B water and can improve its physical quality into drinking water with simple processing.

A Quality Study of South Central Timor Regional Drinking Water Company

This study aimed to analyze and describe; (1) the service quality of South Central Timor (SCT) regional drinking water company or PDAM SCT. (2) Supporting and inhibiting factors of the service quality of PDAM SCT. The study was descriptive research with a qualitative approach. This research focused on (1) the quality of service, broken down into sub-focus; (i) Tangible Evidence, (ii) Reliability, and (iii) Responsiveness. (2) Supporting and inhibiting factors of the service quality. Data were collected through interview, documentation, and observation. Data analysis techniques used were interactive models from Miles, Huberman and Saldana (2014: 10) with three components: (1) Data condensation; (2) Data display, (3) Conclusions withdrawal and Verification. The results showed that the quality of PDAM SCT service has to be improved because many services are still far from the suitability of indicators as an adequate service benchmark. DOI : 10.7176/DCS/10-1-05 Publication date: January 31 st 2020

Assessment of environmental and health hazards arising from the physical and chemical parameters existing in Zayandehrood Water (2013–2015)

Aim: Zayandehrood River is an important drinking water source in Isfahan Province which has been exposed to contamination. The high variation of physical and chemical properties of water is an important factor influencing on the consumers' health and the recipient environment. This study aims to access the health and ecological hazards related to water quality-determining parameters. Materials and Methods: In present work, all the existing data on the physical and chemical quality of Zayandehrood water for two years (March 2013 to March 2015) were collected from Isfahan Province Regional Water Company. The collected data are including dissolved oxygen, turbidity, conductivity, nitrate, phosphate, ammonia, and heavy metals such as arsenic and cadmium. The environmental hazard were determined using the contamination indices such as heavy metal pollution index, positive index, and organic pollution index, and health hazards arising from the absorption of chemical parameters were assessed based on the Environmental Protection Agency model and the use of Rural Access Index. Results: The highest noncarcinogenic hazard due to the absorption of chemical parameters was for the children group, and the ratio of health hazard and the probability of exposure to each of the chemical compounds lies in the permissible limit. The hazard higher than 1 revealing the medium hazard was, however, found in the children age group. Assessment of environmental hazards accordingly shows that the quality of the water environment has low contamination. Conclusion: The contamination of Zayandehrood water with chemical compounds can play an important role in diseases due to the exposure of low-quality water. It is thus advised to properly treat water before drinking it, and in order to decrease the concentration of poisonous chemicals in Zayandehrood Lake water, appropriate actions should be taken to conserve it.

ANALISIS RASIO LIKUIDITAS DAN SOLVABILITAS PADA PERUSAHAAN DAERAH AIR MINUM (PDAM) TIRTA LEMATANG LAHAT

Abstract The formulation of the problem in this research is how to analyze the liquidity ratio and solvency of Tirta Lematang Regional Water Company in Lahat Regency. The purpose of this study was to determine the ratio of liquidity and solvency in the Tirta Lematang Regional Water Company in Lahat Regency. The object of the study of Tirta Lematang Regional Water Supply Company is Lahat Regency 2015-2017 period. The method used is qualitative descriptive. The results of the liquidity ratio research of PDAM Tirta Lematang can be seen from the calculation of current ratio in 2015 (11.62%), 2016 (317.50%), and 2017 (0%). While the liquidity ratio is seen from the calculation with a quick ratio in 2015 (10.54%), 2016 (306.18%), and 2017 (0%). Based on the calculation of the liquidity and solvency ratios, it can be concluded that PDAM Tirta Lematang is in an unhealthy criteria because it is in accordance with the health assessment standards can be said to be healthy if> 65%. The solvency ratio of PDAM Tirta Lematang can be seen from the calculation of the debt to assets ratio in 2015 (345.54%), 2016 (17.00%) and 2017 (47.86%). The solvency ratio can be seen from the calculation of debt to equity ratio in 2015 (140.73%), 2016 (20.96%) and 2017 (91.80%). Based on the calculation of the liquidity and solvency ratios, it can be concluded that PDAM Tirta Lematang is in an unhealthy criteria because it is in accordance with the health assessment standards can be said to be healthy if> 65%.

The Implementation of the Agreement of Water Pipeline Installation Between Regional Water Companies with CV. Tenjo Laut

Abstract : The present study aims to analyze the arrangement and implementation of the agreement of water pipeline installation between Tirta Kamuning Regional Water Company and CV. Tenjo Laut. This descriptive-analytical study applied an empirical juridical approach. The results showed that the agreement of water pipeline installation between Tirta Kamuning Regional Water Company and CV. Tenjo Laut was based on the legislations, especially Article 64 of Law No. 13 of 2003, Article 65 Paragraph 3 of Law No. 13 of 2003, Presidential Regulation No. 70 of 2012, Article 1320 of the Civil Code, and Article 1338 of the Civil Code. Thus, in general, the implementation of the agreement of water pipeline installation between Tirta Kamuning Regional Water Company and CV. Tenjo Laut is in accordance with the legislations.Keywords: Agreement, Water, Regional Companies.�Implementasi Perjanjian Pemasangan Pipa Air Minum antara Perusahaan Daerah Air Minum dengan CV. Tenjo LautAbstrak : Tujuan penelitian yaitu untuk mengetahui pengaturan dan implementasi perjanjian pemasangan pipa air minum antara Perusahaan Daerah Air Minum Tirta Kamuning dengan CV. Tenjo Laut. Spesifikasi penelitian yang digunakan adalah penelitian bersifat deskriptif-analitis dengan pendekatan yuridis empiris. Hasil penelitian menunjukkan pengaturan perjanjian pemasangan pipa air minum antara Perusahaan Daerah Air Minum Tirta Kamuning dengan CV. Tenjo Laut didasarkan atas peraturan perundang-undangan yang diatur oleh Pasal 64 Undang-Undang Nomor 13 Tahun 2003, Pasal 65 Ayat 3 Undang-Undang Nomor 13 Tahun 2003, Peraturan Presiden Nomor 70 Tahun 2012, Pasal 1320 Kitab Undang-Undang Hukum (KUH) Perdata, dan Pasal 1338 Kitab Undang-Undang Hukum Perdata; dan implementasi perjanjian pemasangan pipa air minum antara Perusahaan Daerah Air Minum Tirta Kamuning dengan CV. Tenjo Laut pada umumnya sudah sesuai dengan ketentuan perundang-undangan.Kata Kunci: Perjanjian, Air Minum, Perusahaan Daerah.

Application of water treatment technology with help solar and antimicrobial power to village communities Tanjung Selamat Sub-district Sunggal Districts Deli Serdang

The need for clean water is a challenge in rural areas, especially villages that have not yet been reached by the Regional Water Company (Perusahaan Daerah Air Minum,PDAM). One of the villages experiencing problems with the availability of clean water is Tanjung Selamat Housing Village, Deli Serdang Regency. The people in this village rely solely on ground water that comes from private bore wells. The problem faced is that the water is relatively high in turbidity, and the level of water sterilization is also very low because it contains micro-organisms that cause disease such as dysentery, typhoid diarrhea and so on. An efforts to clean water using citrate have been made but the level of turbidity of the water is still above the threshold. To overcome this problem, appropriate technology is needed for water treatment to produce clean water. The purpose of this activity is to design and implement a technology to process raw water into clean water for public consumption. A design of antimicrobial water purification set with the help of solar power has been provided in Tanjung Selamat Deli Serdang Housing in 2019. The steps taken are surveying the existence of water standards, microbial laboratory testing and acidity test. Low quality raw water has obtained in the target villagewhere the water is high turbidity level, yellowish color, acidity level 6, 23 and contains coliform E.coli bacteria, so it requires processing before it is used as raw material for domestic purposes and drinking water. The application of purifying technology with the help of solar panels is able to convert raw water into clear water, has an acidity of 8.6 and is free of E. coli bacteria. The water produced is also alkaline so it is good for domestic consumption. Water user communities really feel the benefits of appropriate water purification technology developed in community service activities

Assessing the Impact of Information Technology on Organizational Agility in South Khorasan Province (I.R.IRAN)

Organizational agility is one of the management concepts associated with business activities in the twenty-first century. Organizational agility along with other management theories plays a key role in the success of companies in turbulent market environments. In this regard, information technology effect on the agility of organizations and has a fundamental role in understanding and reacting to the environment. In this research, the relationship between information technology and the organizational agility was investigated in several organizations (regional water company, urban water and wastewater company, rural water and wastewater company, electricity distribution department and agricultural jihad organization) in South Khorasan province, Iran. The random sampling method was used and the population of the case study consisted of 300 people (60 questionnaires from each of the departments). The used questionnaire consists of two sections; the first part is used to measure the use of information technology in organizations, and the second part evaluated various organizational agility capabilities (speed, competence, accountability and flexibility). The collected data were analyzed using SPSS software. The results of the research showed the highest impact of information technology on speed, competence and accountability in agricultural jihad organization and on flexibility in regional water organization. In general, it can be said that the average impact of information technology on agility indicators in all organizations is almost in average range. This indicates the positive impact of information technology on the agility of the studied organizations and it is expected that the mechanized and intelligent systems be replaced with traditional systems in the future.

PENGARUH BUDAYA ORGANISASI TERHADAP KINERJA PEGAWAI PADA PERUSAHAAN DAERAH AIR MINUM (PDAM) KOTA KENDARI

The purpose of this research is to find out and explain the influence of organizational culture on the performance of employees of the Regional Water Company Office of Kendari City. The population in this study were all 128 employees. Sampling in this study uses the Taro Yamane formula so that the overall sample is 56 people. This study uses a simple linear regression analysis.The results of the analysis show that organizational culture influences the performance of employees of Kendari City Water Supply Company Office, which is indicated by the magnitude of the determination coefficient or R Square value (R2) of 0.570 indicating that the contribution of variable organizational culture to the performance of employees in Kendari Regional Water Company is 57 %. Thus the hypothesis proposed in this study is acceptable.

Application of MODFLOW with Boundary Conditions Analyses Based on Limited Available Observations: A Case Study of Birjand Plain in East Iran

Increasing water demands, especially in arid and semi-arid regions, continuously exacerbate groundwater resources as the only reliable water resources in these regions. Groundwater numerical modeling can be considered as an effective tool for sustainable management of limited available groundwater. This study aims to model the Birjand aquifer using GMS: MODFLOW groundwater flow modeling software to monitor the groundwater status in the Birjand region. Due to the lack of the reliable required data to run the model, the obtained data from the Regional Water Company of South Khorasan (RWCSK) are controlled using some published reports. To get practical results, the aquifer boundary conditions are improved in the established conceptual method by applying real/field conditions. To calibrate the model parameters, including the hydraulic conductivity, a semi-transient approach is applied by using the observed data of seven years. For model performance evaluation, mean error (ME), mean absolute error (MAE), and root mean square error (RMSE) are calculated. The results of the model are in good agreement with the observed data and therefore, the model can be used for studying the water level changes in the aquifer. In addition, the results can assist water authorities for more accurate and sustainable planning and management of groundwater resources in the Birjand region.

A game theoretical low impact development optimization model for urban storm water management

Abstract This study presents a novel framework to optimize Low Impact Development (LID) practices for urban storm water management. First, the Storm Water Management Model (SWMM) model was executed for different possible scenarios of input parameters and various LIDs to simulate runoff volume, Biochemical Oxygen Demand (BOD) and Total Suspended Solids (TSS) loads. Next, a neural network (MLP-ANN) was trained and validated, as a surrogate model, against the set of inputs and output variables from the SWMM model simulations. The inherent uncertainties in the rainfall-runoff modeling were accounted for using a Nonlinear Interval Number Programming (NINP) model, and stakeholders' interactions are considered using a leader-follower game model. Velenjak urban watershed in Tehran, Iran, with four key stakeholders was considered as the study area. Tehran Municipality is the financial service provider that makes the first decision the leader-follower structure, and is considered as the leader with the priority of minimizing LIDs’ construction and maintenance costs. Tehran Department of Environmental Protection, Tehran Regional Water company, and Tehran Province Water and Wastewater company are the main followers in the decision making structure in the study area. This game theoretical framework yields several Pareto optimal solutions given the conflicting utilities of various players, and a Multi Criteria Decision Making procedure – i.e. PROMETHEE model – selects the most preferred compromised option. Fourteen weighting scenarios were considered in the PROMETHEE model to determine the compromise solution among the 52 solutions on the trade-off curve. The novelty of this study lies in using a nonlinear interval conflict resolution multi-objective optimization model for urban storm water management based on a leader-follower game. The proposed methodology warrants BOD and TSS loads, as well as storm water volume, are all reduced, with the highest reductions of 93, 86 and 90 percent, respectively. Results testify to the efficacy of the proposed model for urban storm water management.

STATUS MUTU AIR SUNGAI SIRAU SUB DAS SIRAU DI DAS BARITO KABUPATEN BARITO TIMUR PROVINSI KALIMANTAN TENGAH

Sirau River is one of the rivers in the Barito Timur Regency which flows through the Dusun Timur District. Sirau River water is used as raw material for regional water companies (PDAM) and is used by communities around the river to meet the needs of other daily life such as MCK and other uses and is also used as a landfill, domestic wastewater and waste water mining and plantation activities both directly and indirectly. This study aims to analyze the status of pollution of the Sirau river through the approach of the pollution index value, assess the quality of the Sirau River water and identify the source of pollutants entering the Sirau River. The results showed that in general the water quality of the Sirau River for pH, COD, BOD, Fe, and Mn parameters exceeds the water quality standard namely Government Regulation No. 82 of 2001 class II concerning Water Quality Management and Water Pollution Control, the main source of pollutants comes from residential domestic waste, coal mining activities and dry leaves that fall into river streams. Sirau river water quality from upstream to downstream based on river water quality analysis using the pollution index method shows that water quality has decreased where the river conditions are generally mildly polluted. The quality of lightly polluted Sirau river water cannot be utilized in accordance with the designation of class II water based on Government Regulation No. 82 of 2001 concerning Management of Water Quality and Water Pollution Control.

INDIVIDUALISME, KEMAUAN MENGAMBIL RESIKO, KREATIFITAS DAN KINERJA KARYAWAN PADA PERUSAHAAN DAERAH AIR MINUM (PDAM) KABUPATEN MERAUKE

The purpose of this study is to analyze whether individualism and high willingness to take risks significantly influence the performance of each workforce and whether creativity mediates between individualism and high willingness to take risks on the performance of all workers. The place of this research is located in the Regional Water Supply Company (PDAM) of Merauke Regency, Papua Province. The population and sample of this research are the total workforce of 99 people. The method of data collection uses the questionnaire method (questionnaire) which uses a list of questions directly from the respondent. Data analysis techniques in this study used SEM analysis through the operation of the AMOS program. The results of the study explained that 1) Individualime influences performance, 2) Willingness to take risks influences performance, 3) Creativity influences performance, 4) Individualime influences performance through creativity as mediation, 5) Willingness to take risks influences workforce performance through creativity as mediation in the Regional Water Company (PDAM) of the Merauke Regency, Papua Province.

Investigating the Relationships Between Organizational Change, Organizational Climate, and Organizational Performance

This study aims to analyze the effect of organizational change (i.e., technostructure change, work procedure, and individual) on organizational climate and organizational performance. By using the census technique, the respondents are all employees of regional drinking water company (PDAM) in Kendal regency of Indonesia. Data are analyzed using simple and multiple regression analysis. The results show that technostructure change partially has a significant negative effect on organizational climate, while work procedure and individual change have a significant positive effect on organizational climate. Furthermore, organizational change simultaneously has a significant positive effect on organizational climate and organizational performance.

Ina

The potentiality of water resources owned by Bantimurung Bulusaraung National Park (Babul NP) is abundant and has been utilized by the community around the area. The concept of payment for environmental services is very possible to be applied to Babul NP in an effort to preserve water resources. Therefore, stakeholders in the utilization of water environmental services in Babul National Park need to be identified. This study aims to map the stakeholders in the utilization of water environmental services in the Babul NP area, as well as the parties who need to be involved if the concept of payment for environmental services to be applied to the management of water environmental services in Babul NP. Data collection was carried out through direct observation, in-depth interviews, questionnaires filling by key informants, and focused group discussions. Data were analyzed by using stakeholders analysis. The results showed that stakeholders who could be directly involved in the utilization of water environmental services related to the payment for environmental services are among others the community around the area, industry, the Regional Water Company (PDAM), Babul NP, and the villages. The selection of the proper stakeholders will greatly affect the successful implementation of the payment for water environmental services concept in Babul NP