Livestock Feedlots in Kewaunee County, Wisconsin

How many, and how big: the county's CAFO footprint

Kewaunee County -- just 343 square miles -- has had 14 to 17 permitted dairy CAFOs (Concentrated Animal Feeding Operations) recorded at various points between 2014 and 2021, carrying an estimated 50,000 to 75,000 dairy animal units combined (roughly 36,000 to 54,000 cows using standard conversion factors). That is an unusually high concentration for the county's size, and it sits on top of a broader dairy sector of over 100 farms and roughly 55,000 total dairy cows countywide. Each CAFO here is regulated under a Wisconsin DNR Wisconsin Pollutant Discharge Elimination System (WPDES) permit -- the same statewide mechanism that applies to any sufficiently large livestock operation in Wisconsin, generally triggered around 1,000 animal units (roughly 700 dairy cows).

Kinnard Farms and the 2021 Wisconsin Supreme Court decision

In 2012, the DNR issued a WPDES discharge permit to Kinnard Farms, an approximately 8,000-animal dairy CAFO in Kewaunee County, without requiring offsite groundwater monitoring wells or a cap on the total number of animal units the operation could house. Clean Wisconsin and area residents challenged the permit, arguing that given the documented groundwater contamination already found across the county, DNR should have added both conditions. At a contested-case hearing, an administrative law judge heard extensive evidence of the contamination and ordered DNR to add the conditions, describing the situation as a "crisis" and the original permit as reflecting a "massive regulatory failure" by the agency.

The fight over whether DNR even had the legal authority to impose those conditions worked through the courts for years, reaching the Wisconsin Supreme Court, which ruled in 2021 (2021 WI 71, Clean Wisconsin v. DNR) that the agency does have explicit statutory authority to impose both an animal-unit maximum and an offsite groundwater-monitoring-well requirement as conditions of a WPDES permit. This decision doesn't just affect Kinnard Farms -- it settled a legal question that now applies to every CAFO permit the DNR issues or reissues statewide, making a case that started in this specific county one of the two most significant Wisconsin water-law rulings of that year.

What this means if you're buying land here

If you're buying farmland with the intent to operate or expand a CAFO-scale livestock operation in Kewaunee County, understand that any permit application or expansion here will be evaluated against a regulatory backdrop where DNR's authority to impose animal-unit caps and require offsite groundwater monitoring is now legally well-established (rather than contested) -- budget for the possibility of both conditions in a way that might not apply the same way in a state without this precedent. If you're buying rural-residential, recreational, or smaller-scale agricultural land near an existing CAFO, the same precedent means a nearby operation's permit may already carry a monitoring-well requirement (which can generate publicly available groundwater data specific to that operation) and an enforceable cap on how large it can grow -- worth asking DNR directly about the specific facility's current permit conditions rather than assuming its footprint is unlimited or unmonitored.

What to actually check before buying near a CAFO here

• Search the Wisconsin DNR's WPDES permit database directly for any CAFO permit covering a specific nearby operation, and check whether it carries an animal-unit cap and/or an offsite groundwater-monitoring-well condition.
• Ask whether any offsite monitoring wells associated with a nearby CAFO's permit have public test-result data available, since these can provide a more direct read on local groundwater conditions than a single private well test.
• Confirm whether the parcel you're considering is included in a CAFO's nutrient management plan as manure-application land, which can apply even to land the CAFO doesn't own, under a landowner agreement -- this carries its own spreading-schedule, well-setback, and soil-testing implications.
• For land you intend to farm yourself, confirm the animal-unit threshold that would trigger WPDES permitting (roughly 1,000 animal units) and the specific general zoning rules in your town (since Kewaunee County has no general county zoning) for livestock operations and setbacks.
• Given the documented groundwater story in this county, treat a private well test as standard due diligence for any parcel near an existing CAFO, not an optional extra -- see our companion well-water page for what to test for.