USGS Water-Quality Information
NoteworthyCall for Papers: Local Science Feature: National & Regional Science: Water Quality DataNational Water Information System (NWIS)
Today's Water Conditions
Water-Quality Web Services
For More Data
USGS in Your AreaUSGS Water Science Centers are located in each state. |
Chapter A7. Biological IndicatorsNational Field Manual for the Collection of Water-Quality Data (TWRI Book 9)7.3 Protozoan PathogensBy R.N. Bushon and D.S. Francy This section of Chapter 7 is available as a pdf file: Download a copy of Adobe Acrobat Reader for free. AbstractProtozoan 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. Contents7.3 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 Return to Chapter A7 Biological Indicators Table of Contents Return to Field Manual Table of Contents Citation for Section 7.3Bushon, 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/. |