Magistrantūros studijų baigiamajame darbe nagrinėjamos geriamojo vandens suvartojimo ir jo pokyčių tendencijos 1996–2012 m. laikotarpyje. Tyrimo objektu pasirinkti didieji Lietuvos miestai – Vilnius, Kaunas, Klaipėda. Tyrimo tikslas – išanalizuoti statistikos departamento duomenis apie vandens suvartojimą ir jo pokyčių tendencijas bei atlikti įvairių veiksnių, lemiančių vandens suvartojimą, analizę. Šiame darbe analizuojami veiksniai, kurie galėtų daryti įtaką išgaunamo ir sunaudojamo požeminio vandens kiekiui. Šie veiksniai gali būti įvardijami kaip – gyventojų skaičiaus mažėjimas, vandens tiekimo ir nuotekų surinkimo kainos, sumažėjusi pramonės gamyba, BVP kitimas, elektros kainos, būsto vartojimo išlaidos. Požeminio vandens gavyba nuo 1996 m. iki 2012 m. sumažėjo 45 %, todėl galima teigti, kad suprojektuotos vandenvietes ir vandentiekio tinklai dirba sumažintu pajėgumu, kas gali bloginti vandens kokybę dėl užsistovinčio vandens vamzdžiuose. Analizuojant statistikos departamento duomenis buvo ieškomas ryšys tarp suvartoto vandens kiekio ir gyventojų skaičiaus kitimo, elektros kainos, pinigų skiriamų būsto vartojimo išlaidoms vienam asmeniu bei BVP kitimo. Remiantis duomenimis paaiškėjo, kad laikotarpyje nuo 1996 m. iki 2012 m. Lietuvoje vienas žmogus per parą suvartojo apie 106 l vandens. Analizuojant statistinį ryšį tarp vandens suvartojimo ir pinigų sumos skiriamos vartojimo išlaidoms, Kaune, gautas aukštas determinacijos koeficientas R2=0,79, Vilniuje – 0,86, Klaipėdoje... [toliau žr. visą tekstą] / The tendencies of changes in water consumption are discussed in this final master’s studies research in 1996–2012 time periods. As research objects are chosen large Lithuanian cities - Vilnius, Kaunas, Klaipėda. The aim of research is to collect and analyze data on water consumption as well as the changes in trends and perform analysis of factors influencing water consumption. This research shows the factors that could affect the extracted and consumed amount of underground water. These factors can be identified as population, GDP changes, housing consumption expenditure. Groundwater extraction from 1996 to 2012 decreased by 45%, suggesting that the designed water supplies and water-supply system operates at a reduced capacity, which can lead to deterioration in water quality due to standing water in pipes. The analysis of the statistical data of the Department has been requested for the relationship between water consumption and population changes, electricity prices, the money allocated for housing consumption expenditure per capita and GDP changes. The statistical data showed that during the period from 1996 to 2012 one person consumed on average 106 liters of water per day in Lithuania. The analysis of the statistical relationship between the rate of water consumption and the amount of money allocated to consumer spending in Kaunas received a high coefficient of determination R2 = 0.79, Vilnius – 0,86, in Klaipėda much lower – 0,45.

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... [to full text]