The City of Cochran, Georgia, operated a wastewater treatment facility under an NPDES (Clean Water Act) permit. Treatment water is dumped into Jordan Creek, a tributary of the Ocmulgee River in the Altamaha River basin. For five years, the city regularly exceeded the effluent limitations in its NPDES permit. The Altamaha Riverkeeper (ARK), a nonprofit organization founded to protect the Altamaha River, sued Cochran under the citizen suit provision of the Clean Water Act. ARK sought injunctive relief against the pollution as well as civil penalties and attorney fees. ARK moved for partial summary judgment. Does the citizen group have the right to bring such a suit? [Altamaha Riverkeepers v. City of Cochran, 162 F. Supp.2d 1368, M.D. Ga. (2001)].