STATE OF WATER QUALITY FOR REBRICEA RIVER BY PRINCIPAL COMPONENT ANALYSIS

Water quality is one of the nowadays matters that benefits of numerous studies, as result of human society acknowledging the impact on the Hydrosphere. On this subject were identified inadequacies between the existing water resources and the upward trend in consumption demand of residents. This study represents an intermediate stage in the seasonal analysis of water quality parameters for the middle sector of Rebricea river in the administrative area of commune Scanteia (Iasi county). Scanteia administrative territory is composed of seven villages: Bodesti, Borosesti, Ciocarlesti, Lunca Rates, Rediu, Scanteia and Tufestii de Sus and has 4781 residents. The most important villages cross in the 27 km length of the river are Carbunari, Grajduri, Scanteia, Rebricea. In the analyzed sector the land-use is predominantly agricultural, the activities have rural specifics. The aim of the study is to quantify the water quality based on statistical method and to identify variables that influence the water quality. Were collected samples from 20 points across the river for two seasons. The analyzed parameters are pH, NO3-, NO2-, GH (General Hardness), KH (Total Alkalinity) and temperature. Preliminary results range between 5.5-8.5 for pH, 0-40 ppm for NO3-, 4-56 degrees dH for GH, 6-16.8 degrees dH for KH and 0 ppm for NO2-. The specifics of the rural settlements and the land use imprint the characteristics of streams, also the absence of a water supply network has a major role in establishing chemical changes. As a result, have been distinguished relationships between impacts on water resources, land-use and demographic characteristics of the landscape.