The study presents the analysis of water consumption in Bialystok in north-eastern Poland in the years 2007–2013. It has been shown in the study that demand for water during a week is varying and it fluctuates. A detailed analysis of water consumption on individual days of the week and public holidays is presented. Individual consumption per capita and daily water consumption irregularity coefficients were estimated. In the analysed period, the highest average daily water demand was recorded on Saturdays (43,129 m3 ), and the lowest on Sundays (37,712 m3 ). Moreover, the impact of economic and environmental factors on the process under study has been characterized in the study. In Bialystok, the price of water increased by 42% in the years 2007-2013, with the inflation rate in the country at 119.2% in those years. It is also presented the influence of maximum daily temperature and precipitation sum on daily water consumption on working days and Saturdays, as well as separately, on Sundays and public holidays.
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