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Article

The Effect of Precipitation on the Microbiological Quality of Bathing Water in Areas under Anthropogenic Impact

1
University Department of Marine Studies, University of Split, Ruđera Boškovića 37, 21000 Split, Croatia
2
Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovića 63, 21000 Split, Croatia
*
Author to whom correspondence should be addressed.
Academic Editor: John Zhou
Water 2022, 14(4), 527; https://doi.org/10.3390/w14040527
Received: 17 December 2021 / Revised: 5 February 2022 / Accepted: 7 February 2022 / Published: 10 February 2022
Intense rainfall can affect bathing water quality, especially in areas with poorly developed sewage systems or combined sewer overflows (CSOs). The aim of this study was to assess the impact of precipitation on coastal bathing water quality in the area of Split and Kaštela (Adriatic Sea), the urban areas where CSOs were applied. The study was conducted during two bathing seasons, 2020 and 2021. The sampling of coastal waters and measurement of physical/chemical parameters was performed every two weeks and after a precipitation event of more than 2 mm. The impact of precipitation on the quality of coastal bathing waters was not noted in the Split area nor in Kaštela, probably due to the low amount of precipitation. The quality of bathing waters in the Kaštela area was significantly worse than in the Split area, which is due to the condition of the sewage system in these areas and not the precipitation effect. It was also revealed that bathing water quality depends on the timing of sampling and the indicator against which it is assessed. Escherichia coli (E. coli) proved to be a better indicator for early morning sampling, while intestinal enterococci were better for late morning sampling. View Full-Text
Keywords: precipitation; bathing water quality; E. coli; intestinal enterococci; combined sewer overflows; Bathing Water Directive precipitation; bathing water quality; E. coli; intestinal enterococci; combined sewer overflows; Bathing Water Directive
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MDPI and ACS Style

Ordulj, M.; Jozić, S.; Baranović, M.; Krželj, M. The Effect of Precipitation on the Microbiological Quality of Bathing Water in Areas under Anthropogenic Impact. Water 2022, 14, 527. https://doi.org/10.3390/w14040527

AMA Style

Ordulj M, Jozić S, Baranović M, Krželj M. The Effect of Precipitation on the Microbiological Quality of Bathing Water in Areas under Anthropogenic Impact. Water. 2022; 14(4):527. https://doi.org/10.3390/w14040527

Chicago/Turabian Style

Ordulj, Marin, Slaven Jozić, Mateja Baranović, and Maja Krželj. 2022. "The Effect of Precipitation on the Microbiological Quality of Bathing Water in Areas under Anthropogenic Impact" Water 14, no. 4: 527. https://doi.org/10.3390/w14040527

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