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Iowa's natural resources plates include the state bird and flower, pheasant, eagle, buck and a Brook trout. Support conservation in Iowa by buying a natural resource plate for your vehicle.
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In accordance with federal Clean Water Act requirements, the NPDES section developed a general permit that authorizes the discharge of biological pesticides and chemical pesticides that leave a residue from point sources to waters of the United States. The permit covers discharges resulting from the application of pesticides to control aquatic nuisance insects and animals, weeds, algae, bacteria, fungi, fish parasites, and forest canopy pests.
Please note that while the Pesticides General Permit (PGP, General Permit #7, or GP7) provides coverage under the federal Clean Water Act, there are also separate state-based requirements for applying pesticides to public waters. These state requirements must also be followed, and the rules can be found in the Iowa Administrative Code at 571 IAC Chapter 54.
The first version of GP7 became effective March 30, 2011. GP7 has been reissued twice. The current version is effective from May 18, 2021 to May 17, 2026. Please note, Notices of Intent (NOIs) are not required for coverage under the reissued general permit.
Please see the links below for more information concerning GP7 and the waterbodies referenced in the permit.
For questions about the Pesticides General Permit, please contact the DNR staff listed below.
Wendy Hieb, firstname.lastname@example.org, 515-808-3039
The NPDES Section is proposing a rule change that will renew the Pesticides General Permit (GP7) with minimal changes. The intent is to align the effective dates for five different NPDES general permits (#5, #6, #7, #8, #9) so that future renewal rule makings for these five permits can be combined. Under the proposed rule, the new effective dates for GP7 would be July 1, 2023 to June 30, 2028.
For more information on the proposed renewal of the Pesticides General Permit, please see the NPDES Rules page.
The Pesticides General Permit requires you to obtain prior authorization from the Iowa DNR for pesticide discharges near shallow wells and to Class C (drinking) waters.
In order to request authorization, you will need to complete and submit a Class C Waters Form at least ninety days prior to the planned pesticide application.
For questions about the Class C Waters form, please contact Michael Anderson, email@example.com,
515-725-0336, in the the Iowa DNR Water Supply section.