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EF/ICR Logo Limitations and Cautions on Data Use

Limitations and Cautions on Data Use

REMINDER: 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 individual health risks.

The ICR data were collected from July 1997 to December 1998. All the data have been verified, and the database is complete. EPA will use the data to identify national and regional patterns, not to reach system-by-system or treatment plant-by-treatment plant conclusions. The data that you will see are from individual samples. What EPA will evaluate is the degree to which the samples represent overall water quality.

The current ICR method for detecting Giardia and Cryptosporidium has significant technical limitations:

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