Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 21 Issue 6

bacteria ml 000 000 Fecal coliform bacteria MPN/100 ml 400 200 100 1 000 10 000 100 000 >100 000 Fecal streptococci MPN/100 ml 670 24 000 200 400 4 000 40 000 >40 000 Aerobic heterotrophic bacteria cfu/ml 18 300 20 000 500 10 000 100 000 750 000 >750 000 IV. D iscussion The conclusions reached were as follows: The measured values of the tested physicochemical parameters at the sampling site at Marble (Novo Selo) dominantly correspond to class I except for BOD5 corresponding to V class, HPK, orthophosphates corresponding to IV class, TOC, ammonium ion and content iron corresponds to class III, total nitrogen, total phosphorus, phenolic compounds correspond to class II. At the same location, the measured values of microbiological parameters correspond to class III. Measured values of the investigated physicochemical parameters at the sampling location at Mezgraja village level, with the Railway Bridge, dominantly correspond to class I except for BOD5 corresponding to class V, HPC corresponding to class IV, TOC, phenolic compounds and total nitrogen corresponding to class II, nitrites , orthophosphates, ammonium ion, Class III copper and iron content. At the same location, the measured values of microbiological parameters correspond to Class IV. Based on the above, in accordance with the Decree on Limit Values of Pollutants in Surface and Groundwater and Sediment and Deadlines for their Reach (Official Gazette RS 50/12), it is concluded that the South Morava from the physico-chemical aspect has a mixed excellent to poor ecological status, while from a microbiological point of view, it has a moderate ecological status at Mramor (Novo Selo), ie poor ecological status at the level of the village of Mezgraja, at the Railway Bridge. The requirements for water quality are different and depend on the purpose for which the water is to be served. If the water in the rivers is polluted, then many plant and animal species may disappear and biodiversity will be destroyed. In their work, [10] Campbell is committed to preserving biodiversity, different practices. One of the procedures he mentions is the restoration of water by special pollination methods. Drinking water must be drinkable and hygienic in order to protect human and animal health. Drinking water is water that is colorless, clear, odorless, fresh in taste, with temperatures between 7 and 12°C above zero. The turbid water, with its unpleasant smell and taste, is polluted and causes disgust when drinking. Hot water is vomiting and not refreshing, and excessively cold can cause serious illness in humans and livestock. For other household needs, water should have the same characteristics as drinking water. For industrial purposes, water must not, above all, be hard, because it causes unnecessary consumption of soap, and in the textile production and processing of leather and the reduction of quality of goods. The degree of hardness of water is of particular importance for steam engines, due to the deposition and the formation of scale in boilers and pipes. a) Water protection measures - technological procedures, lines and systems for water treatment Reducing the amount of pollutants that reach the watercourses is a very important form of pollution control. It involves the installation of appropriate filters and special sedimentation systems at the places where the waste water is spilled. It also includes the mandatory cooling of warm water prior to discharge into the river. A very important form of water pollution prevention is special protection of springs, planning and placement of fertilizers and landfills away from water courses, reduction of fertilizer and pesticide use in agriculture, as well as mass afforestation and protection of soil from erosion.[5] Higher water pollution can be purified by chemical and biological agents. Chemicals are various chemicals that are introduced into water and neutralize dangerous substances. Biological measures are most effective because they are based on the natural laws and activities of living things. Due to the activities of members of the biocenosis, and especially the work of plants and micro-organisms, aquatic ecosystems have a strong power of natural self-purification. [8]This power is reflected in the fact that plants and other organisms eliminate pollutants relatively quickly and restore chemical relationships in water to their natural level. Of course, aquatic organisms are not almighty, so the effects of heavy pollution, especially heavy metals deposited at the bottom, can be felt for decades. In addition to active forms of protection, waterways are protected by appropriate legal means. National and international laws today restrict the discharge of waste into the sea and inland waters. However, they can hardly force people not to. Therefore, raising the level of general awareness of the importance of water for the survival of man is of paramount importance. V. C onclusion How to live in a world of increased industrialization, increased numbers of cars on the streets and increased amounts of waste and how they Water Quality Control of the Southern River Water in the Territory Town of Vranja 1 Global Journal of Science Frontier Research Volume XXI Issue VI Year 2021 85 ( H ) © 2021 Global Journals Version I