National Cotton Council of America v. U.S. Environmental Protection Agency, 553 F.3d 927 (6th Cir. 2009)
National Cotton Council v. EPA is a foundational case at the intersection of environmental and administrative law that reshaped how pesticide applications near water are regulated in the United States.
Does the Clean Water Act require NPDES permits for point-source discharges of pesticides to, over, or near waters of the United States—specifically, for biological pesticides and for chemical pesticides that leave residuals—despite EPA's 2006 rule asserting such uses, when compliant with FIFRA, do not require permits?
Under the Clean Water Act, the "discharge of a pollutant" is the addition of any pollutant to navigable waters from any point source, and such discharges are unlawful absent an NPDES permit. 33 U.S.C. §§ 1311(a), 1362(12), 1342. "Pollutant" expressly includes, among other things, "chemical wastes" and "biological materials." 33 U.S.C. § 1362(6). A "point source" is any discernible, confined, and discrete conveyance, including but not limited to pipes, ditches, channels, and similar devices. 33 U.S.C. § 1362(14). Agency interpretations that contradict unambiguous statutory text are not entitled to Chevron deference. Chevron U.S.A. Inc. v. NRDC, 467 U.S. 837 (1984). FIFRA's registration and labeling scheme does not supplant the CWA's independent permitting requirements.
The Sixth Circuit vacated EPA's 2006 rule. It held that: (1) biological pesticides are "biological materials" and thus pollutants under the CWA; (2) chemical pesticide residues and excess amounts that remain after application are "chemical wastes" and thus pollutants; (3) application equipment such as aircraft and sprayers are point sources; (4) discharges of these pollutants into navigable waters require NPDES permits notwithstanding FIFRA compliance. The court stayed its mandate for a period to allow EPA time to develop general permits.
Doctrinally, the case reinforces that agencies cannot carve out regulatory exemptions that contradict clear statutory commands and that Chevron deference has limits when Congress speaks unambiguously. Substantively, it cements that pesticide applications resulting in biological discharges or chemical residues are subject to the CWA's NPDES program when delivered from point sources. Practically, the decision spurred EPA and states to adopt general permits for pesticide applications (e.g., for mosquito control, aquatic weed management, and forest canopy spraying), reshaping compliance for public health districts, agricultural producers, foresters, and utilities. For law students, the case is a prime example of statutory interpretation, the interplay of overlapping federal regimes (CWA and FIFRA), and the boundaries of administrative discretion in environmental regulation.