Occurrence of Cryptosporidium oocysts in US wastewaters
Wastewater samples collected from ten wastewater facilities across the US were analyzed to determine the occurrence of indigenous Cryptosporidium oocysts using methods based on modifications of USEPA Method 1622. Wastewater facilities participating in this study ranged in size from 0.6 to 193 mgd av...
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| Veröffentlicht in: | Journal of water and health 2006-12, Vol.4 (4), p.437-452 |
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| creator | McCuin, Randi M Clancy, Jennifer L |
| description | Wastewater samples collected from ten wastewater facilities across the US were analyzed to determine the occurrence of indigenous Cryptosporidium oocysts using methods based on modifications of USEPA Method 1622. Wastewater facilities participating in this study ranged in size from 0.6 to 193 mgd average daily flow. A total of 289 wastewater samples were analyzed over a 15-month period. ColorSeed is a commercial product containing gamma-irradiated Cryptosporidium oocysts that have been permanently stained with a Texas Red dye. ColorSeed was used as an internal control with each sample to assess method performance. In 500ml sample volumes, mean ColorSeed recoveries in raw influents and primary effluents were 26.1 17.7% and 33.0 +/- 17.9%, respectively. In 10 liter volumes of secondary effluent, mean ColorSeed recovery was 25.0 +/- 16.6%. Volumes analyzed for tertiary effluent samples ranged from 14.81 to 131.31 resulting in a mean ColorSeed recovery of 48.8 +/- 14.5%. Indigenous oocysts were detected in 30% of raw influents, 46% of primary effluents, 58% of secondary effluents and 19% of tertiary effluents analyzed. Indigenous oocyst concentrations ranged from |
| doi_str_mv | 10.2166/wh.2006.0028 |
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Wastewater facilities participating in this study ranged in size from 0.6 to 193 mgd average daily flow. A total of 289 wastewater samples were analyzed over a 15-month period. ColorSeed is a commercial product containing gamma-irradiated Cryptosporidium oocysts that have been permanently stained with a Texas Red dye. ColorSeed was used as an internal control with each sample to assess method performance. In 500ml sample volumes, mean ColorSeed recoveries in raw influents and primary effluents were 26.1 17.7% and 33.0 +/- 17.9%, respectively. In 10 liter volumes of secondary effluent, mean ColorSeed recovery was 25.0 +/- 16.6%. Volumes analyzed for tertiary effluent samples ranged from 14.81 to 131.31 resulting in a mean ColorSeed recovery of 48.8 +/- 14.5%. Indigenous oocysts were detected in 30% of raw influents, 46% of primary effluents, 58% of secondary effluents and 19% of tertiary effluents analyzed. Indigenous oocyst concentrations ranged from <2 to 86 /liter across all wastewater matrices tested.</description><identifier>ISSN: 1477-8920</identifier><identifier>EISSN: 1996-7829</identifier><identifier>DOI: 10.2166/wh.2006.0028</identifier><identifier>PMID: 17176815</identifier><language>eng</language><publisher>England: IWA Publishing</publisher><subject>Animals ; Cryptosporidium ; Cryptosporidium - isolation & purification ; Dyes ; Effluents ; Environmental Monitoring ; Fluorescent Dyes ; Geography ; Influents ; Methods ; Microscopy, Fluorescence ; Nephelometry and Turbidimetry ; Oocysts ; Oocysts - parasitology ; Oocysts - ultrastructure ; Protozoa ; Quality Control ; Recovering ; Recovery ; Risk Assessment ; Sewage - analysis ; Sewage - parasitology ; Time Factors ; United States ; United States Environmental Protection Agency ; Wastewater ; Wastewater treatment plants ; Water filtration ; Water Microbiology ; Water Movements ; Water Supply ; Water treatment plants ; Xanthenes</subject><ispartof>Journal of water and health, 2006-12, Vol.4 (4), p.437-452</ispartof><rights>Copyright IWA Publishing Dec 2006</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3368-7046371f1ef96f1512d559067883eacc4963bfe5ab0e5abaf8df5e446c56e8ff3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17176815$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>McCuin, Randi M</creatorcontrib><creatorcontrib>Clancy, Jennifer L</creatorcontrib><title>Occurrence of Cryptosporidium oocysts in US wastewaters</title><title>Journal of water and health</title><addtitle>J Water Health</addtitle><description>Wastewater samples collected from ten wastewater facilities across the US were analyzed to determine the occurrence of indigenous Cryptosporidium oocysts using methods based on modifications of USEPA Method 1622. Wastewater facilities participating in this study ranged in size from 0.6 to 193 mgd average daily flow. A total of 289 wastewater samples were analyzed over a 15-month period. ColorSeed is a commercial product containing gamma-irradiated Cryptosporidium oocysts that have been permanently stained with a Texas Red dye. ColorSeed was used as an internal control with each sample to assess method performance. In 500ml sample volumes, mean ColorSeed recoveries in raw influents and primary effluents were 26.1 17.7% and 33.0 +/- 17.9%, respectively. In 10 liter volumes of secondary effluent, mean ColorSeed recovery was 25.0 +/- 16.6%. Volumes analyzed for tertiary effluent samples ranged from 14.81 to 131.31 resulting in a mean ColorSeed recovery of 48.8 +/- 14.5%. Indigenous oocysts were detected in 30% of raw influents, 46% of primary effluents, 58% of secondary effluents and 19% of tertiary effluents analyzed. 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Wastewater facilities participating in this study ranged in size from 0.6 to 193 mgd average daily flow. A total of 289 wastewater samples were analyzed over a 15-month period. ColorSeed is a commercial product containing gamma-irradiated Cryptosporidium oocysts that have been permanently stained with a Texas Red dye. ColorSeed was used as an internal control with each sample to assess method performance. In 500ml sample volumes, mean ColorSeed recoveries in raw influents and primary effluents were 26.1 17.7% and 33.0 +/- 17.9%, respectively. In 10 liter volumes of secondary effluent, mean ColorSeed recovery was 25.0 +/- 16.6%. Volumes analyzed for tertiary effluent samples ranged from 14.81 to 131.31 resulting in a mean ColorSeed recovery of 48.8 +/- 14.5%. Indigenous oocysts were detected in 30% of raw influents, 46% of primary effluents, 58% of secondary effluents and 19% of tertiary effluents analyzed. Indigenous oocyst concentrations ranged from <2 to 86 /liter across all wastewater matrices tested.</abstract><cop>England</cop><pub>IWA Publishing</pub><pmid>17176815</pmid><doi>10.2166/wh.2006.0028</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of water and health, 2006-12, Vol.4 (4), p.437-452 |
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| subjects | Animals Cryptosporidium Cryptosporidium - isolation & purification Dyes Effluents Environmental Monitoring Fluorescent Dyes Geography Influents Methods Microscopy, Fluorescence Nephelometry and Turbidimetry Oocysts Oocysts - parasitology Oocysts - ultrastructure Protozoa Quality Control Recovering Recovery Risk Assessment Sewage - analysis Sewage - parasitology Time Factors United States United States Environmental Protection Agency Wastewater Wastewater treatment plants Water filtration Water Microbiology Water Movements Water Supply Water treatment plants Xanthenes |
| title | Occurrence of Cryptosporidium oocysts in US wastewaters |
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