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EN
This work presents problems related to the water consumption in the city of Olecko situated in the north-east part of Poland in the Warmińsko-Mazurskie Province of the country, at the eastern border of the Mazurian Lake District along the trail connecting the land of the Large Mazurian Lakes with the Suwalsko-Augustowskie Lake District. Over 2011–2012 water extraction to the municipal water supply network was studied. The volume of water extracted every day was analyzed and the gathered volumes were analyzed statistically. The varying water extraction was also studied. The obtained results were presented in a graphic form. Basing on the descriptive stats and prepared diagrams certain general conclusions were drawn and the collected study figures and facts were summed up. This allowed to determine days of the highest and lowest water consumption. Also months of extreme water extraction and consumption were determined. The water extraction ranged from 1641 m3/24h to 2607 m3/24h, at an average value of 2077.4 m3/24h. Over the period under study the day of the largest water extraction and consumption was in July and the day of the lowest water extraction and consumption in December. During a week inhabitants used the highest water amount on Saturdays and the lowest on Sundays and other feast-days. Basing on the conducted measurements also the coefficient of water consumption per capita was determined. The fluctuation of this coefficient was identical as that for the water consumption. Within the period of study it ranged from 73.3 l/M 24h to 116.5 l/M 24h. The average value of the specific water consumption was 92.8 l/M 24h. For the sake of discussion the obtained results were compared with observations across the country.
PL
W pracy przeanalizowano zmiany zużycia wody w miastach w pięcioleciu 1999-2003, nawiązując do zmian, jakie wystąpiły w latach dziewięćdziesiątych ubiegłego wieku. Podjęto również próbę oceny trwałości tendencji zmian zużycia wody. Zakresem analizy objęto zużycie wody w 119 polskich miastach, które wg danych statystycznych zaliczone są do miast o decydującym zużyciu wody w gospodarce narodowej. Sumaryczne zużycie wody w tych miastach stanowi około 63% krajowego zużycia wody na cele przemysłowe oraz ponad 56% na cele komunalne. Z przeanalizowanych danych wynika, że nadal utrzymuje się w polskich miastach spadek zużycia wody, chociaż w ostatnim pięcioleciu tempo tego spadku nieco osłabło. Dość istotny spadek zużycia wody dotyczy gospodarstw domowych. Pomimo zmian spadku zużycia wody w gospodarstwach domowych w poszczególnych latach, jego tempo nadal można uznać za duże. W pracy nie stwierdzono korelacji pomiędzy wartością jednostkowego całkowitego zużycia wody w miastach a liczbą mieszkańców, gdyż istotny wpływ na to zużycie ma przemysł. Szczególnie dotyczy to miast o liczbie mieszkańców poniżej 20 tys.
EN
Water consumption variations in Poland's towns in the time span of 1999-2003 were analyzed and compared to those observed in the last decade of the 20th century. Attempts were also made to assess the durability of the trend in water consumption variations. The analysis covered water consumption in 119 Polish towns which, in statistical terms, are regarded as significant water consumers for the national economy. The overall water consumption in those towns accounted for approximately 63% and over 56% of the water volume used in Poland for industrial purposes and municipal needs, respectively. The results disclosed a continuing decrease in municipal water consumption, though over the 5-year period under study the decrease continued at a slightly slower rate. A notable drop in water consumption was observed in households. Although this drop varied from one year to another, its rate was still considerable. No correlation was established between the unit value of overall water consumption in towns and the number of inhabitants, as this water use is strongly influenced by the industry. This holds particularly for towns with a population lower than 20,000.
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