ADBNet is an online database tracking Iowa's water quality assessments. These assessments are prepared
under guidance provided by the US EPA under
Section 305b of the Clean Water Act to:
- estimate the extent to which Iowa's waterbodies meet the
goals of the Clean Water Act and attain state water quality
- share this information with planners, citizens and other
partners in basin planning and watershed management activities.
Water quality in Iowa is measured by comparisons of recent monitoring data to the
Iowa Water Quality Standards. Results of recent water
quality monitoring, special water quality studies, and other assessments of the quality of Iowa's waters are used to
determine the degree to which Iowa's rivers, streams, lakes, and wetlands
support the beneficial uses for which they are designated in the Iowa Water
Quality Standards (for example, aquatic life (fishing), swimming, and/or use
as a source of a public water supply). Other information from water quality
monitoring and studies that are up to five years old are also used to expand the
coverage of assessments in the report. Waters assessed as impaired (that is,
either partially supporting or not supporting their designated uses) form the
basis for the state's list of impaired waters as required by Section 303(d) of the Clean Water Act.
Summaries of Section 305(b) assessments for all states are available from U.S. EPA.