Oltiana Petri1, Besim Agolli1, Anilda Kokali1, Arben Luzati1, Edjona Bici1, Blerta Kika1, Aida Demo1
1Institute of Public Health, Tirana, Albania.
Aim: Bathing water qualities are highly vulnerable to microbial pollution from municipal sewage, industrial effluents as well as agriculture run-off and river discharges. Fecal contamination not only impairs water quality but also potentiates human health risks. The aim of our study was to see the 5 years’ trend of microbiological quality of bathing waters in Velipoja, Shëngjin, Durrës, Gjiri i Lalëzit, Kavaja, Divjaka, Seman, Vlora, Palasa, Dhërmi, Himara, Qeparo, Borsh and Saranda coastals.
Methods: Every year we collect 900 samples, which are to be taken 30 centimeters below the water’s surface and in water that is at least one meter deep. Assessment of bacterial load of the coastal waters was done 9 times for every point, for the Escherichia Coli and Intestinal Enterococci, according to the methodsISO 7899-1 and ISO 9308-3.
Bathing water assessment is to be classifiedaccording to the categories indicated in the Directive 2006/7/EC and recommendations of WHO/UNEP-2010.
Results: Microbial Water Quality Assessment Category (cfu/100 ml water) done in 100 monitoring point were:
During 2014 Excellent quality 30%, Sufficient quality 11%, Good quality 10%, Poor quality 49%. During 2015 Excellent quality 53%, Sufficient quality 23%, Good quality 9%, Poor quality 15 %. During 2016 Excellent quality 39%, Sufficient quality 14%, Good quality 4%, Poor quality 43%. and during 2017 Excellent quality 74.5%, Sufficient quality 15.7%, Good quality 6.9%, Poor quality 2.9%. During 2018 Excellent quality 82.4%, Sufficient quality 13%, Good quality 0.9 %, Poor quality 3.7%.
Conclusion: The number of monitoring point with excellent quality was increased for year 2018 compared to years 2014-2017.
Good quality category was increased for 2018 compared to 2014 and 2016 and decreased compared to 2015 and 2017.
Sufficient quality was decreased for 2018 compared to 2014 – 2017.
Poor quality was decreased for 2018 compare to 2014 -2017.
Microbial quality of recreational bathing waters in Albania have an significant increasing of the quality due to investment in the sewerage system and better waste water treatment.
Keywords: coastal areas, microbiology, water quality.