2017, volume 11, issue 2

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https://hdl.handle.net/20.500.13044/1284

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Przeglądanie 2017, volume 11, issue 2 według Autor "Gładysz, Iwona"
  • Rekord
    Legionella spp. in selected public utility buildings in Poland in 2009- 2013
    (Państwowa Szkoła Wyższa im. Papieża Jana Pawła II w Białej Podlaskiej, 2017-07-28) Shpakou, Andrei ; Gładysz, Iwona ; Sikora, Agnieszka ; Wójtowicz-Bobin, Małgorzata ; Kozioł-Montewka, Maria
    Background. Civilizational changes, including urbanisation and industrialisation, created the conditions for the development of new pathogens colonising water networks which endanger human health and life. The aim of the study was to assess the contamination of water supply systems in public buildings by Legionella spp. a pathogenic group of Gram-negative bacteria. Material and methods. The material samples were taken from the hot water supply systems of 41 buildings: school dormitories, boarding schools, educational centres, student dormitories. Results. In all analysed years, there were samples in which the applicable standards were exceeded, as specified by the regulation on the quality of water intended for human consumption. The highest percentage of negative samples was found in 2012, with as many as 81.1%, and the lowest one in 2011 − 35.3%. Positive samples obtained in the first and subsequent tests were detected in 20.0% of the tested facilities. The change from positive to negative values was found in 30.0% of the tested water networks. There were also cases of negative samples both in the first and subsequent tests, which was detected in 50.0% of the facilities. Conclusions. 1. An excessive amount of the officially permissible value of Legionella was found in 53.9% of the examined hot water samples. 2. The obtained results confirm the necessity of modernising and doing elementary repairs in water supply networks.