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EF/ ICR Logo Source Water (Untreated) Levels of Cryptosporidium for
Atlanta-Fulton Co. Water Resources Comm.


REMINDER: Data Purpose: The ICR data were collected as part of a national research project to support development of national drinking water standards. They should NOT be used to determine local water systems compliance with drinking water standards, nor should they be used to make personal judgements about health risks.

Detection Method Limitations: The ICR method for detecting Cryptosporidium and Giardia has technical limitations.

Results of Zero: A measurement of zero means that no Cryptosporidium was found in the sample volume that was analyzed. Zero results do not indicate the absence of Cryptosporidium in the source water because the method recovery is low and the amount of sample analyzed is small. In other words, Cryptosporidium may be present in source water even if no oocysts are counted for the sample volume analyzed. The presence of Cryptosporidium may also be mistakenly identified as other organic material such as algae.

Efforts Beyond Regulations: Many large public water systems are voluntarily improving the control of pathogens by participating in the Partnership for Safe Water , an initiative between EPA, the States, and water suppliers to improve the performance of treatment.


Source Water (Untreated) Levels of Cryptosporidium for Atlanta-Fulton Co.

Water Type Month Cryptosporidium Level (#oocysts/100L) Volume Analyzed
Surface Water JUL 1997 48 2
Surface Water AUG 1997 0 6
Surface Water SEP 1997 0 5
Not Reported OCT 1997 0 5
Not Reported NOV 1997 0 6
Not Reported DEC 1997 0 6
Not Reported JAN 1998 0 5
Not Reported FEB 1998 0 4
No t Reported MAR 1998 0 2
Not Reported APR 1998 0 2
Not Reported MAY 1998 0 6
Not Reported JUN 1998 0 1
Not Reported JUL 1998 0 3
Not Reported AUG 1998 0 2
Not Reported SEP 1998 0 3
Surface Water OCT 1998 0 13
Surface Water NOV 1998 0 6
Surface Water DEC 1998 0 9

How does this utility's source water compare to source waters nationally for cryptosporidium? Click on "view report" to see the state and national levels of cryptosporidium.

Month State Report National Report July 1997 view report view report Aug 1997 view report view report Sep 1997 view report view report Oct 1997 view report view report Nov 1997 view report view report Dec 1997 view report view report Jan 1998 view report view report Feb 1998 view report v iew report Mar 1998 view report view report Apr 1998 view report view report May 1998 view report view report Jun 1998 view report view report Jul 1998 view report view report Aug 1998 view report view report Sep 1998 view report view report Oct 1998 view report view report Nov 1998 view report view report Dec 1998 view report view report

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