Water Resources--Office of Water Quality

National Field Manual

7.3 PROTOZOAN PATHOGENS

By R.N. Bushon and D.S. Francy

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Protozoan Pathogens (11/2003)

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Abstract

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.

Contents

7.3 Protozoan pathogens

7.3.1 - Sterilization procedures for sampling equipment
7.3.2 - Sample collection, preservation, transport, and holding times
7.3.3 - Laboratory method: USEPA Method 1623
7.3.4 - Calculation and reporting of protozoan pathogens

Comments/Errata page

Citation for Section 7.3:
Bushon, R.N., and Francy, D.S., November 2003, Protozoan pathogens: U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chap. A7, section 7.3, accessed __list date__, from http://pubs.water.usgs.gov/twri9A/.

Chapter A7, Biological Indicators
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Last Modified: 28 Dec. 07
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