Chemical Analysis and the River Mura water Quality

The environment contains several water sources such as brooks, rivers and lakes, that indirectly or directly contribute to human wellbeing and a variety of water ecosystems. Rivers are, unfortunately, still the main domestic and industrial waste-water transmission source, creating both the permanent and largest pollution source. From among other significant pollution sources, outflows from agricultural areas, also have an influence on climatic changes. Rivers are regarding pollution easily accessible, therefore it is very important to supervise water-pollution, the quality of river-basins’ waters, and to assess water quality according to time and space influences. This paper presents the physical and chemical parameters of the River Mura’s water for the period 1996 to 2009. Samples of water were taken at four diverse measuring places; analyses being performed in two independent laboratories. The parameters that characterized the 336 samples were: water temperature, pH, electrical conductivity, dissolved oxygen, oxygen saturation, oxygen deficiency, biochemical and chemical oxygen demand in filtered and non-filtered samples, total and carbonate hardness, suspended substance share, AOX, TOC and phosphate, ammonium, nitrite, nitrate, calcium, magnesium, sodium, potassium, chloride, sulphate and phosphate ions contents. The seasonal and space influences of pollution on the River Muras’ were researched using linear regression.. Special attention was devoted to the monitoring of those individually measured parameters that most reflected river’s quality. Monitoring of the River Mura’s water pollution and the results from particular measured parameters, can also be used when searching for pollution causes and when planning preventive measures for protective purpose.