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The United States EPA Concept for Deriving Water Quality Guidelines for Recreational Waters

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Abstract:The guidelines developed by the US EPA for controlling the quality of recreational waters are based on protecting the health of swimmers and other recreationists who may be exposed to waters contaminated by human and animal excreta. Risks to swimmers were determined through a series of epidemiological studies at marine and freshwater beaches where the relationships between water quality and symptomatic swimming-associated illness were defined. The data, which showed that there was an association between gastrointestinal illness and swimming, and also that as the density of fecal indicator microbes in the water increased, so did the frequency of swimming-associated illness, were used to set a tolerable limit to the level of illness in swimmers. The limit was related to the geometric mean of indicator bacteria in at least five water samples per month and also a single sample value. These water quality limiting values are recommended to the states in the US, who have the authority to set guideline values into state standards.
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Citation:Dufour, A. P. The United States EPA Concept for Deriving Water Quality Guidelines for Recreational Waters. Presented at Workshop: "Monitoring the Quaity of Recreational Waters: Do we need a change of paragdigms?", Tuebingen, Germany, March 28-31, 2004.
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Contact: Mary P. O'Bryant - (919)-541-4871 or obriant.mary@epa.gov
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Division: Microbiological & Chemical Exposure Assessment Division
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Branch: Immediate Office
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Product Type: Abstrct/Oral
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Presented: 03/28/2004
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Related Entries:
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Bullet Item Measurements of Fecal Contamination in Recreational Waters By New Rapid Methods and Their Relationships to Health Endpoints
spacer Relationship Reason:   A Project of the Product
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Last Updated on Monday, October 22, 2007
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