ECONOMIC AND ENVIRONMENTAL ASPECTS IN MODELLING MONTHLY WATER DEMAND IN BIAŁYSTOK – A CASE STUDY

Abstract

The paper discusses selected factors potentially affecting a monthly water demand in the Bialystok water system. At the beginning economical factor i.e. water price was considered. Then, the correlation between monthly water demand and four environmental aspects were analysed. Finally, fi ve linear econometric models were estimated. The fi rst model includes only water price and describes monthly water demand from September to April. The next models involve months from May to August and include, apart from water price, variability meteorological parameters (rainfall and air temperature). The estimated functions characterise a very good compatibility between simulated and real data.