Arkansas v. Oklahoma
United States Supreme Court
503 U.S. 91 (1992)
Relevant factsFree
The EPA issued an NPDES permit for an Arkansas sewage plant's discharge, which traveled downstream into Oklahoma (plaintiff); Oklahoma challenged the permit as violating its own no-degradation water quality standards, and after an ALJ upheld it based on de minimis impact, the court of appeals reversed the EPA's issuance of the permit.
IssueFree
Whether, under the Clean Water Act, the Environmental Protection Agency may condition an NPDES permit on one state's compliance with water quality standards of another state.