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Overview
The Information Collection Rule (ICR) required EPA to collect research data on:
The data will be used to help assess the potential health risks of pathogens, disinfectants, and disinfection byproducts, and will be used to guide future regulatory and public health decisions. You can retrieve summary reports on microbial and disinfection byproduct data at national, state and water system levels through an ICR Query. The diagram below shows the types of data you can access through a query as well as where the water samples, which provided the data, were taken. Pathogen samples were taken from the source water prior to treatment and disinfection byproduct samples were taken from distribution system or at the entry to the distribution system (the pipes that carry water from the treatment plant to the customer's taps). Starting in 1999 water systems must provide an annual report to their customers on the
quality of their drinking water. Your water system's report (the Consumer Confidence Report)
may be on the Internet. EPA's website has links to many of these reports.
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