In this paper are represented the results of the pollution character of soils and water during the 2002. Taking into consideration the changes of analyzed parameters in during the analyzed period, there have been noticed strong periodical pollutions by organic substances, nutrients and industrial polluters with the growing tendency regarding frequency which make worse the quality of soil-water the drainage basin of the river Tara, unique in Europe is proposed. That is the reason why the monitoring of the mentioned potential, with support of the space informatics technology as the prerequisite of its management.

Investigations of phytoplankton in the Montenegrin coastal sea through summer (June, July, August) 2003 are described in this paper. They represent continuation from the previous years, and especially from 2001 and 2002. Maximum microphytoplankton quantity is found in the area of the bay (Kotor Bay) during June 3.9 x 10**6 cell/cubic dm, with the dominance of Nitzschia delicatissima (99%). This species was found with high percentage (more than 50%) during July and August, too. Leptocylindrus minimus and Skeletonema costatum, which were dominant in the previous period, through this year were slightly presented. In the area outside the Bay of Boka Kotorska, microphytoplankton was presented with quantities cell between 10**3 and 10**5 cell/cubic dm. Mean values of microphytoplankton in the area of the Boka Kotorska Bay were in 2003 year 4.6 times higher than outside the Bay. The same ratio was found for nanophytoplankton, too.

The paper is concerned with the procedures of treatment of wastewaters from sugar-processing plants. A short survey is given of both the aerobic and anaerobic procedures with a special regard of the possibility of recirculating the treated wastewaters. Data are presented for treatment of wastewaters originated from sugar-processing plants by the active sludge procedure carried out on a laboratory scale. It was concluded that thus purified water, after final membrane treatment, could be recirculated to the production process.

Advancement in microbiology reveals new potentially pathogenic water borne microorganisms. Because of inconvenient water works, World Health Organization and legislators necessarily standardize guidelines and codes for potable water examination. Water works with safe water treatments and distribution systems obey the rules of routine control, and that is why they do not recognize more sophisticated sides of microbiological water quality. From that point of view, poorly studied slow growing chemoorganotrophic bacteria resistent to environmental conditions are interesting.

Management of aquatic ecosystems and planning of their protection needs good knowledge about their conditions. Mathematical modeling becomes one of the basic things in that processes. Last decades was attain important progress in quality at the beginning relative modest models of aquatic ecosystems. During the analysis of existing experiences to forced a conclusion that a quality model in one's own structures needs proportional representation of hydrodinamic and ecology background.

The sampling of Crnojevica river has been carried out, because of estimation the correlation between main water quality parameters and precipitation impacts, as well as adequate hydrological parameters. An appropriate dynamic sampling has been applied. Continuous pollution of river water has been confirmed, as well as source of the pollution. It is estimated strong correlation of water quality parameters from precipitation quantity and water level, especially for sanitary pollution. Change of quality parameters value is discrete and accidental.

In recent works enzymatic phosphatase activity state as a new potential good indicator for water saprobity and trophic state in water. On water reservoir 'Grliste' reinstated monitoring on the base physico-chemical, microbiological and biological analysis from beginning works water factory 1990 but, from 1998 use of this new biochemical method in monitoring as reliable additional indicator in fast preliminary water quality and the ecophysiological state of water. According to the results obtained for index of phosphatase activity (IFA) (Matavulj, 1986) water of 'Grliste' water accumulation belongs to category 3-A (polluted water).

The examined period is characterized by small floristic variety and well advanced eutrophication process. By the phytoplankton qualitative analysis it has been noted the domination of Bacillariophyta algal division. The values of density on phytoplankton population and their biomass show the domination of bluegreen algae, before each other, that of the species Gomphosphaeria lacustris Chod. As the consequence of the eutrophication, these algae develop intensively, up to the degree of water blossoming. The very high concentrations of the primary and secondary nutrients have also been noted. The trophic status of the reservoir on the basis of OECD classification can be defined as eutrophic.

Dutch classification system for sediment pollution was applied at the Begej canal in Serbia (Serbia and Montenegro). The method used calculates the class of the sediment on the basis of the sediment composition, organic matter fraction and mineral clay fraction as well as data on ecological risks. Results obtained showed that sediment is heavily polluted and urgent remediation is necessary. The contamination consists of heavy metals, especially cadmium, copper and chromium (class 4). Regarding organic micropollutants some high levels of PCB's and organochlorine pesticides like DDT/DDD/DDE were found (class 3).

This paper presents general characteristics of water source Mareza, which has been used for water supply of the town of Podgorica, as well as potential risks that can affect water quality of this source. Measures for the source protection in order to maintain existing high quality of the source water are presented.