POLLUTION OF SMALL RESERVOIRS OF WATER IN BIALYSTOK AGGLOMERATION

The aim of the study work was to evaluate the impact of the emissions of heavy metals of roads and streets in the surface water in reservoirs located near the main roads of the Bialystok City. The analysis was conducted for a period of six weeks from March to April 2014. During the study five reservoirs were selected. Two of them, the first and the forth of them are located in Parks. One of them – the third one is a public bathing beach. The second is located near the crossroads in the center of the city and last one – the fifth object is situated within buildings and parking of trucks. Study includes an analysis of indicators such as total suspended solids, BOD5, CODCr, selected heavy metal such as, lead, nickel, copper, cobalt and chromium. All determinations were made in accordance to given methodology, and the evaluation was performed by comparing achieved results to a limit values presented in the Decree of Environment Ministry