An italian study on Cryptosporidium and Giardia in wastewater, fresh water and treated water

Cryptosporidium oocysts and Giardia cysts has been isolated from waters worldwide. In Italy, studies on these parasites in the environment are still limited due to absence of epidemiological evidence and difficulty of adequate methodologies of sampling and analysis. The new Drinking Water Directive...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2005-05, Vol.104 (1-3), p.445-457
Main Authors: BRIANCESCO, Rossella, BONADONNA, Lucia
Format: Article
Language:English
Subjects:
Air. Soil. Water. Waste. Feeding
Animals
Applied sciences
Aquatic environment
Bacteria
Biological and medical sciences
Clostridium
Clostridium perfringens
Correlation
Correlation coefficient
Cryptosporidium
Cryptosporidium - isolation & purification
Cysts
Drinking water
Environment. Living conditions
Environmental Monitoring
Exact sciences and technology
Fresh Water - parasitology
Giardia
Giardia - isolation & purification
Italy
Medical sciences
Microbiology
Oocysts
Oocysts - isolation & purification
Parasites
Pollution
Protozoa
Public Health
Public health. Hygiene
Public health. Hygiene-occupational medicine
Recreation
Sewage
Sewage - parasitology
Surface water
Swimming pools
Treated water
Water Microbiology
Water treatment and pollution
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Summary:Cryptosporidium oocysts and Giardia cysts has been isolated from waters worldwide. In Italy, studies on these parasites in the environment are still limited due to absence of epidemiological evidence and difficulty of adequate methodologies of sampling and analysis. The new Drinking Water Directive 98/83/CE states that Cryptosporidium has to be determined in water intended for human consumption if Clostridium perfringens is detected. This investigation contributes to the knowledge of both Cryptosporidium and Giardia occurrences in Italian aquatic environments through a two-year monitoring program. In addition, indicator bacteria and Clostridium perfringens were monitored in sewage, surface waters, drinking water, and swimming pools and possible correlations were calculated among all the selected parameters. Cysts and oocysts were detected in sewage and surface water and Giardia numbers always prevailed over Cryptosporidium. The parasites were not detected in drinking water, while a positive sample was obtained from the analysis of swimming pools. Pearson's correlation coefficients evidenced a reciprocal correlation between both the protozoa and the Enterococci counts.
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-005-2282-4