The Clean Water Act (CWA) presumes that all waters are suitable for the highest levels of recreation, such as swimming, and that the waters can support a diverse community of aquatic life. A state must present a well-documented study to set a lower goal. EPA found that the studies submitted by IDNR did not support a lower designated use for the 93 disapprovals.
The CWA establishes a mandatory role for EPA to review and approve or disapprove all state water quality standards. IDNR submitted new and revised Iowa surface water quality standards to EPA for review and approval, as required by the law. This submission updates the use designations for many of the state’s waters following site-specific field studies to determine the highest attainable use for the individual waters.
Caltha LLP provides expert environmental consultant services in Iowa to obtain environmental permits, evaluate regulatory requirements, and to develop cost effective compliance programs.
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