In last years all countries of the European Union experience decrease of water consumption. What is worse, in most cases large European water treatment plants (WTP) have been design and built decades ago, when water consumption was much higher than nowadays. It is a challenging task to adjust WTP’s capacity to the current water demand as it is associated with costs and safety issues. Minding that fact, authors decided to propose an new authorial methodology of combined reliability-cost efficiency assessment for water supply system with exceeded redundant capacity, based on new index - unit indicator of reliability-cost efficiency. It included both reliability and costs aspects. It was decided to present the new method on example of the pumping subsystems working for WTP in Poland. The research was based on Activity-Based Life Cycle Costs (AB-LCC) methodology together with two-parametric reliability evaluation. Using real operational and financial data an application of proposed authorial reliability-cost indicator was presented. The reliability-cost efficiency assessment allowed to present how operation of each pumping subsystem influenced global operational costs of WTP. This information is essential for decision-making process for rational management of technical facilities.
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 Batóg B Batóg J. Analysis of tendencies in households water consumption in Polish cities. J Manage Finance. 2013;11:89-100. http://zif.wzr.pl/pim/2013_3_2_7.pdf.
 Grafton RQ Ward MB To H Kompas T. Determinants of residential water consumption: evidence and analysis from a 10-country household survey. Water Resour Res. 2011;47. DOI: 10.1029/2010WR009685.
 Zimoch I Szymik-Gralewska J. Risk assessment methods of water supply system in terms of reliability and operation cost. In: Mambretti S Brebbia CA editors. Urban Water II. Southampton: WIT Press; 2014:51-62. DOI: 10.2495/UW140051.
 Collier C Jacques D. Optimum equipment life by minimum life cycle costs. J Constr Eng Manage. 1984;10:248-265. DOI: 10.1061/(ASCE)0733-9364(1984)110:2(248).
 Reddy VR Kurian M Ardakanian R. Life-cycle cost approach for management of environmental resources. A primer. Springer Briefs in Environmental Science 2015. DOI: 10.1007/978-3-319-06287-7.
 Kong J Frangopol D. Sensitivity analysis in reliability-based lifetime performance prediction using simulation. J Mater Civ Eng. 2005;17:296-306. DOI: 10.1061/(ASCE)0899-1561(2005)17:3(296).
 Kong J Frangopol D. Cost-reliability interaction in life-cycle cost optimization of deteriorating structures. J Struct Eng. 2004;130:1704-1712. DOI: 10.1061/(ASCE)0733-9445(2004)130:11(1704).
 Szymik-Gralewska J Zimoch I. Optimization of the drinking water coagulation and filtration system as a result of reliability analysis and Life Cycle Costing. In: Nowakowski T Młyńczak M Jodejko-Pietruczyk A Werbińska-Wojciechowska S editors. Safety and Reliability Methodology and Applications. Taylor & Francis Group. 2015:487-496. DOI: 10.1201/b17399-71.
 Kayid M Izadkhah S Alhalees H. Reliability analysis of the proportional mean residual life order. Math Probl Eng. 2014;1-8. DOI: 10.1155/2014/142169.
 Shafik RA Mathew J Pradhan A. Low-cost unified design methodology for secure test and intellectual property core protection. IEEE Trans Reliab. 2015;64:1243-1253. DOI: 10.1109/TR.2015.2464011.
 Liu Y Zuo MJ Li YF Huang HZ. Dynamic reliability assessment for multi-state systems utilizing systemlevel inspection data. IEEE Trans Reliab. 2015;644:1287-1299. DOI: 10.1109/TR.2015.2418294.
 Certa A Enea M Galante G Lupo T. A multi-objective approach to optimize a periodic maintenance policy. Int J Reliab Qual Saf Eng. 2012;19(6). DOI: 10.1142/S0218539312400025.
 Safari J. Multi-objective reliability optimization of series-parallel systems with a choice of redundancy strategies. Reliability Eng System Safety. 2012;108:10-20. DOI: 10.1016/j.ress.2012.06.001.
 Iwanejko R. Accuracy of reliability measures of water supply and sewage facilities. Scientific Problems Machines Operation Mainten. 2009;1157:29-36. http://t.tribologia.eu/plik/spm/spmom-09v44n1_p-029.pdf.
 Niknam SA Sawhney RA. Model for reliability analysis of multi-state manufacturing systems. Int J Quality Reliab Manage. 2014;31:938-949. DOI: 10.1108/IJQRM-05-2012-0065.
 Levitina G Xinga L Daia Y. Cold-standby sequencing optimization considering mission cost. Reliab Eng System Safety. 2013;118:28-34. DOI: 10.1016/j.ress.2013.04.010.
 Weidea JAM Pandeyb MD Noortwijka JM. Discounted cost model for condition-based maintenance optimization. Reliab Eng System Safety. 2010:95;236-246. DOI: 10.1016/j.ress.2009.10.004.
 Amani N Ali NM Mohammed AH Samat RA. Maintenance and management of wastewater system components using the condition index system prediction process and costs estimation. Eksploatacja i Niezawodność - Maintenance Reliab. 2013;15:161-168. http://ein.org.pl/sites/default/files/2013-02-12.pdf.
 Kayrbekova D Barabadi A Markeset T. Maintenance cost evaluation of a system to be used in Arctic conditions: a case study. J Quality Mainten Eng. 2011;17:320-336. DOI: 10.1108/13552511111180159.
 Frangopol DM Liu M. Maintenance and management of civil infrastructure based on condition safety optimization and life-cycle cost. Struc Infrastruct Eng. 2007;3:29-41 DOI: 10.1080/15732470500253164.
 Korpi E Ala-Risku T. Life cycle costing: A review of published case studies. Managerial Auditing J. 2008;23:240-261. DOI: 10.1108/02686900810857703.
 Frangopol DM. Life-cycle performance management and optimisation of structural systems under uncertainty: accomplishments and challenges. Struct Infrastruct Eng. 2011;7(6):389-413. DOI: 10.1080/15732471003594427.
 Shafiqul M Sadiq R Rodriguez M Najjaran H Hoorfar M. Reliability assessment for water supply systems under uncertainties. J Water Resour Plann Manage. 2014;140:468-479. DOI: 10.1061/(ASCE)WR.1943-5452.0000349.
 Eisenberg D Soller J Sakaji R Olivieri A. A methodology to evaluate water and wastewater treatment plant reliability. Water Sci Technol. 2001;43:91-99. www.ncbi.nlm.nih.gov/pubmed/11436809.
 Woodward D. Life cycle costing - theory. Information acquisition and application. Int J Project Manage. 1997;15:335-344. DOI: 10.1016/S0263-7863(96)00089-0.
 Barone G Frangopol DM. Reliability risk and lifetime distributions as performance indicators for life-cycle maintenance of deteriorating structures. Reliab Eng System Safety. 2014;123:21-37. DOI: 10.1016/j.ress.2013.09.013.
 Parra C Crespo A Cortes P. On the consideration of reliability in the Life Cycle Cost Analysis (LCCA). A review of basic models. In: Soares G editor. Safety and Reliability for Managing Risk. London: Taylor Francis Group; 2006. http://en.calameo.com/read/0009293100909d00e3b69
 Omar MK Murgan S. An improved model for the cost of quality. Int J Quality Reliab Manage. 2014;31:395-418. DOI: 10.1108/IJQRM-05-2012-0066.
 Kumar J Kadyan MS Malik SC. Cost analysis of a two-unit cold standby system subject to degradation inspection and priority. Eksploatacja i Niezawodność - Mainten Reliab. 2012;14:278-283. http://ein.org.pl/sites/default/files/2012-04-03.pdf.
 Emblemsvåg J. Activity‐based life‐cycle costing. Managerial Auditing J. 2001;16:17-27. DOI: 10.1108/02686900110363447.
 European Commission. Directorate-General. Regional Policy. Guide to cost-benefit analysis of investment projects. European Commission. Brussels 2008. https://poig.parp.gov.pl/files/74/108/255/3949.pdf.