Regulations
- Webpage
Plans & specifications for reviewable structures & systems
At least 90 days before beginning construction, existing or proposed Concentrated Animal Feeding Operations (CAFO) must submit plans and specifications for reviewable construction projects to the DNR for approval. DNR approval of these reviewable…
- Webpage
WPDES permit application materials, instructions, reporting & compliance documents
View required application materials if you are a proposed Concentrated Animal Feeding Operation (CAFO) applying for the first time for a WPDES permit or you are an existing CAFO applying for a renewal of your WPDES permit.
- Webpage
Nutrient management planning
A Concentrated Animal Feeding Operation (CAFO) Water Pollutant Discharge Elimination System (WPDES) permit requires a field-specific, phosphorus-based [PDF] nutrient management plan (NMP) that outlines the amounts, timing, locations, methods and…
- Webpage
Manure spills response, planning and prevention
Get help immediately if runoff or a spill occurs! Report manure spills immediately! Call our 24-hour spill emergency hotline: 1-800-943-0003. All agricultural or livestock operations, regardless of size, must report manure spills or runoff that…
- Webpage
First-time CAFO WPDES permit applications
If your operation has 1,000 animal units (AU), your operation is a Concentrated Animal Feeding Operation (CAFO) and you must obtain a Wisconsin Pollutant Discharge Elimination Permit (WPDES) from the Department of Natural Resources.
- Webpage
Concentrated animal feeding operations WPDES permits
What is an “animal unit”? “Animal units” (AU) measure equivalencies between animal types as established by s. NR 243.05, Wis. Adm. Code [exit DNR] and the CAFO WPDES permit program. For example, 1,000 beef cattle, 715 milking cows or 200,000…
- Webpage
Trapping Regulations
The river otter trapping season in the Northern Zone will close early, effective April 1, 2024, at midnight. No river otters can be harvested on or after April 1. Registration can still occur on April 1, so long as the harvest occurred the prior…
- Webpage
Wastewater operator certification
A "certified operator" is an individual who has met the requirements of Chapter NR 114, Wisconsin Administrative Code, and has been issued a certificate by the DNR to operate one or more of the classifications of wastewater treatment plants.
- Webpage
Small water system (OTM/NN) operator certification
Small water system operators work at an "other than municipal" (OTM) community water system or a non–transient non–community (NN) water system. OTM systems serve groups of 25 or more year-round residents; they can include mobile home parks,…
- Webpage
Septage business license requirements
All septage businesses in the State of Wisconsin that service and/or dispose of septage (septic tanks, holding tanks, sanitary grease interceptors, portable restrooms, privies, etc.) shall be licensed pursuant to ch. NR 113, Wis. Adm. Code. Each…