Occurrence of Cryptosporidium oocysts and Giardia cysts in Norwegian groundwater wells in bedrock | Zendy

Sylvi Gaut | Zendy; Lucy J. Robertson | Zendy; Bjørn Gjerde | Zendy; Atle Dagestad | Zendy; Bjørge Brattli | Zendy

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Occurrence of Cryptosporidium oocysts and Giardia cysts in Norwegian groundwater wells in bedrock

Author(s) -

Sylvi Gaut,

Lucy J. Robertson,

Bjørn Gjerde,

Atle Dagestad,

Bjørge Brattli

Publication year - 2008

Publication title -

journal of water and health

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.482

H-Index - 59

eISSN - 1996-7829

pISSN - 1477-8920

DOI - 10.2166/wh.2008.046

Subject(s) - cryptosporidium , giardia , groundwater , clostridium perfringens , bedrock , turbidity , environmental science , hydrology (agriculture) , microbiology and biotechnology , veterinary medicine , geology , biology , ecology , bacteria , geomorphology , feces , geotechnical engineering , medicine , paleontology

The occurrence of Cryptosporidium oocysts and Giardia cysts in Norwegian groundwater wells in bedrock has been investigated for the first time. Wells close to risk areas such as farming and septic tanks were chosen. In all, 20 water samples from 20 different waterworks were collected. The samples were analysed for Cryptosporidium and Giardia, using US EPA Method 1623. Turbidity was also measured. Water samples from 10 of the waterworks were also analysed for Clostridium perfringens by membrane filtration. Cryptosporidium was detected in the groundwater samples from 3 of the waterworks. Giardia and Clostridium perfringens were not detected. Too few samples were analysed to verify whether Giardia is indeed absent from bedrock wells, and further studies are recommended to give more reliable data.

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