A new performance analysis model for urban water supply systems evaluation

Kizilöz B., Şişman E.

Desalination and Water Treatment, vol.235, pp.177-192, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 235
  • Publication Date: 2021
  • Doi Number: 10.5004/dwt.2021.27648
  • Journal Name: Desalination and Water Treatment
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, CAB Abstracts, Environment Index, Geobase, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.177-192
  • Keywords: Water supply systems, Non-revenue water, Risk analysis, Performance analysis
  • Istanbul Medipol University Affiliated: Yes


Non-revenue water (NRW) is among the performance indicators that have a great importance in urban water distribution systems. In this study, the probability statistical approach used to compare the temporal variations of the non-revenue water rate (NRWR) and a new performance evaluation chart have been suggested for practical use of the NRWR. The NRWR’s probabilistic occurrence frequency and the statistical analysis provide a criterion for the performance evaluation and improvement of operating conditions. The NRWR performance indicator evaluation has been made for three periods of 12 districts in Kocaeli by considering the risk level. According to the study results, in the 2013–2015 periods, the performance of the Dilovası, Gebze, and Kartepe districts has improved significantly compared to the 2010–2012 periods. Başiskele and İzmit have the highest performance level in the last period following Kandıra. It will be possible to ameliorate the NRWR of districts in the future periods through the suggested site-specific model analysis and prioritize the plans by sampling the good district practices.