Buying Land in Kewaunee County, Wisconsin

Zoning: no county ordinance -- each of the 10 towns is on its own

Kewaunee County's Land & Water Conservation Department (625 Third Street, Luxemburg; (920) 845-9743) administers the county's Shoreland Zoning Ordinance (Chapter 16, most recently updated July 2025) and Flood Plain Zoning Ordinance (Chapter 19), along with the county's Sanitary Ordinance (Chapter 15, governing POWTS/septic permitting) -- but the county has no general zoning ordinance covering land outside those state-mandated overlays. Instead, general zoning is handled independently by each of the county's 10 towns: Ahnapee, Carlton, Casco, Franklin, Lincoln, Luxemburg, Montpelier, Pierce, Red River, and West Kewaunee, each with its own designated local zoning administrator. A town's zoning administrator generally refers building-permit applicants seeking to build within the shoreland area to the county for approval before a local permit can issue -- so a parcel anywhere near Lake Michigan, an inland lake, or a river/stream is subject to both the town's general zoning and the county's shoreland review.

Karst bedrock and CAFO density: a documented, serious groundwater story

Kewaunee County's geology is a significant part of its land-buying picture. Much of the county's bedrock is shallow, fractured karst, allowing surface contaminants -- manure, septic effluent, fertilizer runoff -- to reach groundwater quickly with little natural filtration, and roughly 70% of county residents rely on that groundwater for drinking water via private wells. A countywide well-testing effort in June 2013 found that 30.85% of tested wells had nitrate and/or E. coli levels unsafe for human consumption under state and federal standards -- a scale of documented contamination that led residents and environmental groups to formally petition the U.S. EPA for emergency action in 2014, and that prompted a DNR-facilitated, multi-stakeholder Groundwater Collaboration Workgroup, which issued its final report in June 2016.

This isn't disconnected from the county's agricultural intensity: Kewaunee County has one of the state's highest concentrations of large dairy operations, with 14-17 permitted CAFOs (Concentrated Animal Feeding Operations) recorded at various points between 2014 and 2021, carrying between roughly 50,000 and 75,000 dairy animal units combined. See our dedicated well-water page for the fuller picture and what to actually test for, and our livestock-feedlots page for how Wisconsin's CAFO permitting process works here specifically -- including a case that started in this county and now shapes CAFO regulation statewide.

A landmark case that started here: Kinnard Farms and DNR permitting authority

In 2012, the DNR issued a water pollutant discharge (WPDES) permit to Kinnard Farms, an approximately 8,000-animal dairy CAFO in Kewaunee County, without the offsite groundwater-monitoring-well requirement or animal-unit cap that Clean Wisconsin and area residents argued were necessary given the documented contamination in the area. After a contested-case hearing at which an administrative law judge found the situation a "crisis" and DNR's original permit a "massive regulatory failure," the fight over DNR's authority to impose those conditions worked its way to the Wisconsin Supreme Court, which ruled in 2021 that DNR does have the explicit statutory authority to require both an animal-unit maximum and offsite groundwater monitoring as WPDES permit conditions. This decision (2021 WI 71) now governs CAFO permitting authority statewide, but it originated specifically here -- worth knowing if you're evaluating land near any of the county's dairy operations, since it's directly relevant to what conditions a nearby CAFO's permit may (or may already) carry.

Lake Michigan shoreline and the county's agricultural economy

Kewaunee County's Lake Michigan shoreline supports a smaller-scale tourism economy (charter fishing, beaches) than neighboring Door County to the north, but agriculture remains the county's dominant economic sector by far: farms occupy roughly 80% of the county's land, with dairy farming alone (over 100 farms, an estimated 55,000 cows) generating around $223 million a year and agriculture overall contributing an estimated $669 million annually and roughly 2,800 jobs. This scale of agricultural land use is directly connected to the groundwater story above -- a useful frame for evaluating any parcel in the county, whether you're buying to farm or simply buying rural-residential land nearby.

GIS/land records and other departments to know

Kewaunee County's Land Information Office (810 Lincoln Street, Kewaunee) handles GIS mapping, real property listing, and county surveying; the Register of Deeds ((920) 388-7126) holds recorded deeds, easements, and plats; and the Treasurer/Property Lister ((920) 388-7131) handles property tax payment and assessment support. Kewaunee County Public Health ((920) 388-7160) handles well-water testing kit distribution and environmental health questions, and UW-Madison Division of Extension's Kewaunee County office (625 Third Street, Luxemburg; (920) 388-7141) supports the county's agricultural sector.