Hrvatske vode, Vol. 33 No. 131, 2025.
Stručni rad
Bacteriological analysis of water and sediment in the Krapina River
Blanka Dadić
orcid.org/0009-0004-4873-1328
; Prirodoslovno-matematički fakultet Biološki odsjek, Zagreb, Hrvatska
*
Jasna Hrenović
orcid.org/0000-0001-8513-3993
; Prirodoslovno-matematički fakultet Biološki odsjek, Zagreb, Hrvatska
Tomislav Ivanković
; Prirodoslovno-matematički fakultet Biološki odsjek, Zagreb, Hrvatska
* Dopisni autor.
Sažetak
The Krapina River, located in the Hrvatsko Zagorje region, is exposed to anthropogenic pollution due to discharges of untreated urban and hospital wastewater. The aim of this research was to determine the bacteriological quality of water and surface sediments by analysing the presence of indicators of faecal pollution. Sampling was carried out from the river source and the sources of two tributaries, as well as downstream after the confluence of the Krapinica River. Intestinal enterococci and faecal coliforms were already recorded at the sources of the river and its tributaries, with their concentrations significantly increasing downstream due to the inflows of urban and hospital wastewater. The concentrations of indicator bacteria in the sediment were higher than in the corresponding free water. Based on the concentration of bacteria indicating faecal pollution, the Krapina River does not meet the criteria for bathing and recreation. Wastewater treatment prior to its discharges into the river is crucial for reducing anthropogenic impact on the ecosystem, while systematic water and sediment quality monitoring can contribute to the adoption of effective river protection measures.
Ključne riječi
intestinal enterococci, faecal coliforms, water quality, wastewater, river
Hrčak ID:
339876
URI
Datum izdavanja:
2.4.2025.
Posjeta: 0 *