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On July 1, 2018, the Iowa DNR issued a new general permit to authorize discharges from the following activities:
General Permit #8 (GP8) covers discharges to surface waters of the state and to the ground surface. Certain discharges from potable water lines in MS4 cities may already be authorized under the city’s MS4 permit.
Please use the links below to view General Permit 8 and documents intended to assist you in navigating the general permit requirements.
General Permit 8 - effective July 1, 2018
Several documents have been developed to help people determine what permit requirements are applicable in a given situation.
Most permittees will be automatically covered under GP8. However, some permittees will need to submit an electronic Notice of Intent for Coverage (eNOI). To determine if you need to submit an eNOI, please refer to the documents linked above. If you need to submit an eNOI, please proceed to the NPDES Databases page.
A few permittees will need to complete an Antidegradation Document as part of the the electronic Notice of Intent. For more information on the antidegradation requirements, please see the Water Quality Standards Antidegradation page.
What GP8 does:
For more information on this permit, contact Wendy Hieb at email@example.com or 515-808-3039.
Definition of Waters of the United States.
Map of Outstanding Iowa Waters.
The current version of the permit will expire on June 30, 2023. The NPDES Section is proposing a rule change that will renew the permit for a second five-year term. The proposed changes will clarify existing permit requirements and address needs identified during the initial permit term.
For more information on the proposed renewal, please see the NPDES Rules page.