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United States Environmental Protection Agency
Assessment Database
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Assessment Database Version 2 (ADB v.2)

The Assessment Database (ADB) is a relational database application for tracking water quality assessment data, including use attainment, and causes and sources of impairment. States need to track this information and many other types of assessment data for thousands of waterbodies, and integrate it into meaningful reports. The ADB is designed to make this process accurate, straightforward and user-friendly for participating States, territories, tribes and basin commissions.

The ADB supports three principal functions:
  • Improve the quality and consistency of water quality reporting
  • Reduce the burden of preparing reports under Sections 305(b), 303(d), 314, and 319 of the Clean Water Act (CWA)
  • Improve water quality data analysis

The ADB provides user-friendly data entry forms and automates the production of reports that States submit to EPA through the 305(b) process.


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