Section 1 Limitation on citizen suit provision
“(i) Limitation for POTW suits
“(1) In general—No action may be commenced under subsection (a)(1) by a citizen with respect to a publicly owned treatment works to enforce an effluent standard or limitation under this Act or an order issued by the Administrator or a State with respect to such a standard or limitation unless the publicly owned treatment works is in significant non-compliance, as defined in the Environmental Protection Agency’s December 12, 1996, guidance document entitled “A General Design for SNC Redefinition Enhancement in PCS”.
“(2) Exception—Notwithstanding paragraph (1), no action may be commenced under subsection (a)(1) with respect to a publicly owned treatment works that is in significant non-compliance based on a manual designation, as defined in the Environmental Protection Agency’s December 12, 1996, guidance document entitled ‘A General Design for SNC Redefinition Enhancement in PCS’.”