Water quality and microbial contamination status of groundwater in Jaffna Peninsula, Sri Lanka

• Autorzy: Mahagamage M. G. Y. L. , Manage Pavithrani S. , Manage Pathmalal M.

Identyfikatory

DOI

10.2478/jwld-2019-0001

Warianty tytułu

PL

Jakość wody i mikrobiologiczne zanieczyszczenie wód gruntowych na półwyspie Jaffna na Sri Lance

• Języki publikacji: EN

Abstrakty

EN

In Sri Lanka, among 2588 Salmonella positive cases, the highest incidences were recorded from Jaffna peninsula during 2005 to 2013. Therefore, the present study aimed to identify the microbiological and chemical contamination status of groundwater (40 well water) sources in Jaffna during November 2016. The total coliform, E. coli, Salmonella spp. and Shigella spp. along with some physico-chemical parameters of groundwater were studied. The results revealed that entire peninsula was contaminated with total coliform and E. coli bacteria and the parameters recorded were not within the WHO and SLS (Sri Lanka Standards) drinking water quality standards. 38% of sampling locations were positive for Salmonella spp. and among them six sampling locations were being used for drinking purposes. The results of the study correlates with the statistics of typhoid cases recorded in Jaffna. Results of the study also revealed that around 80% of wells were not within the values specified in guidelines of the SLS for drinking water quality on electrical conductivity. Further, 15% of wells recorded greater than 10 mg∙dm^–3 nitrate, which is still below the SLS drinking water standards (45 mg∙dm^–3). According to the water quality data, PCA analysis showed that Jaffna town, Nallur, Tellippalai and Kopay DS divisions has similar characteristics for water quality.

PL

Spośród 2588 przypadków zatrucia salmonellą zanotowanych na Sri Lance największą liczbę zachorowań stwierdzono na półwyspie Jaffna w latach 2005–2013. Dlatego prezentowane badania miały na celu identyfikację chemicznego i mikrobiologicznego zanieczyszczenia wód gruntowych z 40 studni w listopadzie 2016 r. Analizowano całkowitą liczbę bakterii z grupy coli, Escherichia coli, Salmonella spp., Shigella spp. oraz wybrane parametry fizyczne i chemiczne wód gruntowych. Wyniki ujawniły, że cały półwysep jest skażony bakteriami z grupy coli i bakterią Escherichia coli, a analizowane parametry nie spełniają standardów WHO i standardów Sri Lanki co do jakości wody. W 38% badanych stanowisk stwierdzono obecność Salmonella spp., przy czym sześć z nich wykorzystywano jako źródła wody pitnej. Wyniki badań korelowały z rejestrowanymi przypadkami duru brzusznego na półwyspie. Stwierdzono także, że 80% studni nie spełniało wymogów stawianych wodzie pitnej przez normy Sri Lanki w odniesieniu do przewodnictwa elektrolitycznego. Ponadto stężenie azotanów w 15% studni było większe niż 10 mg∙dm^–3, ale nie przekraczało granicznej wartości 45 mg∙dm^–3 wyznaczonej przez normy dla wody pitnej. Analiza PCA wykazała, że miasto Jaffna oraz gminy Nallur, Tellippalai i Kopay mają wody o podobnych właściwościach.

Słowa kluczowe

EN

coliform; E.coli; groundwater; Jaffna Peninsula; Salmonella spp.; Shigella spp; water quality

PL

bakterie z grupy coli; Escherichia coli; jakość wody; półwysep Jaffna; Salmonella spp.; Shigella spp.; wody gruntowe

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2019
• Tom: no. 40
• Strony: 3--12
• Opis fizyczny: Bibliogr. 56 poz., rys., tab.

Twórcy

autor

Mahagamage M. G. Y. L.

• University of Sri Jayewardenepura, Department of Zoology, Centre for Water Quality and Algae Research, Gangodawila, Nugegoda 10250, Sri Lanka

autor

Manage Pavithrani S.

• Eastern University, Faculty of Health Care Sciences, Vantharumoolai, Chenkalady, Sri Lanka

autor

Manage Pathmalal M.

• University of Sri Jayewardenepura, Department of Zoology, Nugegoda, Sri Lanka

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).