Chapter A7. Section 7.3. Protozoan Pathogens

Techniques of Water-Resources Investigations 09-A7.3
By:  and 



Protozoan pathogens are widely distributed in the aquatic environment. Cryptosporidium and Giardia are the principal protozoan pathogens that are known to affect the acceptability of water supplies for public use within the United States. A sampling program for protozoan pathogens should be conducted over an extended period of time because of cyclical and seasonal variations in their concentrations in the environment. This report provides information on the equipment, sampling protocols, and laboratory method that are in standard use by U.S. Geological Survey (USGS) personnel for the collection of data on protozoan pathogens. Each chapter of the National Field Manual is published separately and revised periodically. Newly published and revised chapters will be announced on the USGS Home Page on the World Wide Web under 'New Publications of the U.S. Geological Survey.'

Suggested Citation

Bushon, R.N., and Francy, D.S., 2003, Chapter A7.3, Protozoan Pathogen: U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chap 7.3,

Publication type Report
Publication Subtype USGS Numbered Series
Title Chapter A7. Section 7.3. Protozoan Pathogens
Series title Techniques of Water-Resources Investigations
Series number 09-A7.3
DOI 10.3133/twri09A7.3
Edition Revised Nov 2003
Year Published 2003
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) U.S. Geological Survey
Description 22 p.
Larger Work Type Report
Larger Work Subtype USGS Numbered Series
Larger Work Title National Field Manual for the Collection of Water-Quality Data. U.S. Geological Survey Techniques of Water-Resources Investigations, Book 9
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