engleski

Physical, chemical and biological parameters of drinking water quality of the City of Velika Gorica water supply facility

The paper deals with the physical, chemical and biological parameters of drinking water quality sampled at the City of Velika Gorica water supply facility in 2015 and 2016. Special attention was payed to the influence of the season on the water quality parameters and the presence of atrazine in drinking water by monitoring its concentration in relation to the MDK (maximum permitted concentrations) prescribed by the relevant Ordinance (Official Gazette 125/2013). All results of the analysis of physical and chemical parameters in 2015 and 2016 showed lower values compared to MDK, except atrazine in 2016, whose concentration in one sample was 0.1 μg / L, which is at the MDK boundary. Of the biological parameters, no Escherichia coli, total coliforms, enterococci, Pseudomonas aeruginosa were isolated in one sample of drinking water, while aerobic bacterial values at 22 and 37 ° C were below MDK values and at these concentrations were not a hazard to human health. According to the results of the analysis, no significant influence of rainfall over the seasons was noticed on the above parameters. All the analyses from 2015 and 2016 have shown that the water is health-friendly for drinking and that it complies with the provisions of the relevant Ordinance.

Analysis ; Drinking water ; Quality ; Atrazine

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