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Geriamojo vandens poreikio pokyčių tendencijos
The tendencies of changes in water consumption are discussed in this final master’s studies research during different periods. The object of the research was chosen the biggest Lithuanian cities such as Vilnius, Kaunas, Klaipeda, Panevezys and Siauliai, also the lower reaches of the Nemunas, the basins of the Venta-Lielupe and the Neris. The purpose of the research is to collect and to analyze the data about the water consumption and its tendencies of changes and to do the analysis of factors, which influence water consumption. This research paper analyses factors, which could influence the increase or decrease of water consumption. These factors might be the decrease of production amount, increasing water tariffs, the establishment of water-meters, low incomes of citizens, old water-supply systems, which influence bad water quality for consumers. Whereas designed water-supply do not match current standards of water consumption, water is held there for too long and this could influence connecting new water consumers. However at present land’s economy revives, the GDP is increasing and so the incomes of citizens increase too, which influence the increasing standards of water consumption, although they have not reached the level of the standards in 1989-1990. Analyzing statistical data about water consumption there was looked for a connection between the amount of consumed water and unemployment. Also analyzing the dependence on middle income and the level of water consumption, there was estimated quite high correlation grade R- 0.6. The data given by the Department of Statistics shows, that the average consumption of water in urban area is about 90 liter per person, and the average water consumption in rural area is about 70 liter per person. It would be averagely about 80 liter per person, this is less that the recommended amount of water, which is essential to maintain people’s hygiene. The tendencies of changes in water consumption the mostly depend on incomes of citizens, the low price of water tariffs and the unemployment rate.