摘要：Medjimurje county is rich in ground waters. Ground waters are exploited within two water wells – Nedelišće (six wells) and Prelog (two wells). In this paper we investigated some of the main parameters of anthropogenic origin in ground waters: nitrates, phosphates and detergents. We analysed these parameters in a period from 2006 to 2014, on both water wells; Nedelišće and Prelog. We also analysed the influence of the precipitation (quantity and distribution) and flood on ground waters and their correlation with measured parameters. Nitrate concentrations in water well Nedelišće obtained lower concentration compared to water well Prelog. In a period from 2006 to 2010 nitrate concentrations were constantly decreasing. From 2011 to 2014 floods and precipitations caused increase of nitrate concentrations (up to 12 mg/L). The highest nitrate concentrations were observed in well closest to the inhabited area (Nedelišće) and in the area with the intensive agricultural production (Prelog). All investigated parameter concentrations were below maximum acceptable – tolerant concentration.
关键词：nitrates; phosphates and detergents in drinking groundwaters; flood sediments as hot spots; red clover (Trifolium pratense) as cover crop.
