A standard water balance table which is presented in Table 1 has been developed by IWA in order to accurately assess water losses in different countries. Water losses, which are classified as real and apparent losses, are the difference between the system input volume and volume of authorized consumption. Real losses are due to pipe bursts, pipe cracks and overflows from storage tanks whereas apparent losses are associated with measurement errors of water meters, data handling errors and unauthorized consumption (Alegre et al. 2000; Lambert & Hirner 2000; McKenzie & Seago 2005; Tabesh et al. 2009; Karadirek 2019, 2020). The problem of excessive water losses is common in many countries such as Turkey, where the country average of total water losses is around 50% and apparent losses are estimated to be 20% (Karadirek 2020).