The last decade of 20th century in Serbia (Yugoslavia) was marked with economy recession, war surroundings, and finally bombing in the period March-June 1999. Global increment of environmental pollution was one of the catastrophic consequences. War actions caused destroying of big oil refineries and reservoirs, chemical complexes and industrial objects. Afterwards, toxic and carcinogenic substances reached out to atmosphere, soil and hydrographic system. Also, ammunition with depleted uranium was used. Heavy metals are very dangerous, so that, in this paper are presented results of investigation of heavy metals contents in surface soil layers. Heavy metals are movable, by erosion processes, with possibility of reaching hydrographic network and water supply systems. Investigation was carried out at a few localities: Fruska Gora, Ivanovo, Goc and Crni Vrh. Total contents of heavy metals (Zn, Cu, Pb, Cd, Mn) was determined by AAS (atomic spectrophotometry), by usage "Varian-Spectra AA-10" apparatus.

Spacial Plan of Serbia (Yugoslavia) predicts the concept of water supply, which is based on exploitation of water from surface storages, formed or under construction. Usage of surface storages is profitable if exploitation of water takes place by protected capacity, during predicted period. Useful spaces of storages are endangered by fulfillment with erosional material, especially in hilly-mountainous region. By the way, particles of sediment are the carriers of pollutants from agricultural surfaces and products of wet and dry deposition from the atmosphere. In order to protect storages by fulfillment, primary tasks are decreasing the erosion production and stopping the existing quantities of sediment in the hydrographic system. Data about investments in erosion control works (period 1994-2000) are presented in the paper. It is necessary to increase level of investments, because the territory of Serbia (Yugoslavia) is region of high risk, in the sense of erosional material production.

In this investigation the applied method for lead determination in traces, from 10E-6 - 10E-10 mol/cubic dm, was Potentiometric Stripping Analysis (PSA). The main attribute of this method is possibility to detect very low metal concentrations. The investigation results of level concentration of lead into the top, natural and atmospheric water from some towns of Serbia (Yugoslavia), including city of Belgrade, are given. The investigation was carried out in some towns of Serbia (Yugoslavia), including city of Belgrade, during the 1994-1995.