County Map

Land and Water Conservation
Drinking Water Testing Results

Data for the maps was derived from the Drinking Water Testing Programs held in various locations throughout St. Croix County starting in 2003. Testing programs were voluntary and were offered to private well owners in each town or in a central location for group of neighboring towns. Data summaries are aggregated on the basis of a quarter-quarter section (approximately 35 to 40 acres). In the cases where there were multiple participants in a particular quarter-quarter section, the resulting number was an average of all the results from within that quarter-quarter section. An Introduction to Groundwater In St. Croix County (40 pages, 3.08 MB PDF) is a report compiled May of 2006 by UW-Extension.”