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about Concentrated Animal Feeding Operations.
for a Wisconsin Pollutant Discharge Elimination System permit.
Contact information
For additional information about applying for a WPDES permit for your CAFO, please contact:
CAFO intake specialist

Reissuance or modification of CAFO WPDES permits

At least 180 days prior to the expiration of your current WPDES permit for a CAFO, you are required to submit a complete reissuance application to the Department of Natural Resources (DNR). Before submitting your reissuance application, please review the following reissuance instructions.

Reissuance and modification applications must be submitted online through the DNR’s ePermitting System. The ePermitting System includes all required forms. Instructions to submit your application using the ePermitting System:

What happens if a permit expires?

Provided the permittee has submitted a timely reissuance application or notice of intent, the terms and conditions of their permit continue to apply until it has been reissued, revoked, or until an individual permit is issued for the discharge to which the general permit applied. See s. NR 227.51 Wis. Adm. Code [exit DNR] for additional information. A summary of expired CAFO permits is available on the Wisconsin CAFO Permits Summary page.

If you have submitted a timely application and your current permit expires before the department makes permitting decision, your operation is covered by the terms and conditions of the expired permit. See the Permit FAQ section for details.

On-site compliance inspection and post-inspection letter

Prior to the deadline for your reissuance application submittal, your DNR regional agricultural specialist will conduct an on-site compliance inspection with you. The inspection determines whether the operation is in substantial compliance with the terms of the existing permit.

Following the compliance inspection, your regional agricultural specialist will send you a letter summarizing the inspection. The letter will specify any compliance activities requiring completion before a renewal is issued. The letter will also indicate whether the facility will be covered under a general or an individual permit and whether an Environmental Analysis is needed.

WPDES permit reissuance application components and information

Your application should include the following as advised by your regional agricultural specialist. Submit all application materials online through the ePermitting System. Materials denoted with an asterisk (*) are available in the ePermitting System.

Guidance and helpful materials

Reporting and compliance

Consultants and other permits

Besides the WPDES Permit, there are normally other permits and approvals required for new or expanding dairies and other animal feeding operations. You will need to ask your local, county and state officials directly to get information about these other permits and authorizations.

Submit your completed reissuance application

At least 180 days before your current WPDES permit expires, submit your complete application online through the ePermitting System.

Last revised: Thursday May 23 2019