Source Water Protection Maps and Geospatial Data - EH: Minnesota Department of Health

Reports and Geospatial Data
Source Water Protection

MDH Reports

Contaminants found in Source Water

MDH is partnering with U.S. Geological Survey (USGS) on a project to test for unregulated contaminants in drinking water sources across the state. MDH is conducting this study to understand where unregulated contaminants occur and at what levels.  The results will guide future efforts in monitoring, source water protection, and development of health-based guidance values.




Aquifer Tests

Geospatial Data Files

Maps are available as PDFs upon request. Call 651-201-4700 or send an email to to request a map in PDF form.

File Name and Metadata Date Updated File
Class V Sensitivity 12/20/05 Class V Shapefile
Drinking Water Supply Management Areas (DWSMAs) - Groundwater 07/01/19 DWSMAs - Groundwater Shapefile
DWSMAs - Surface Water 05/20/09 DWSMAs - Surface Water Shapefile
DWSMAs - Vulnerability 07/01/19 DWSMAs - Vulnerability Shapefile
Emergency Response Areas (ERAs) 07/01/19 ERA Shapefile
Hydrogeologic Sensitivity of the Water Table Aquifer 04/11/17 Hydrogeologic Sensitivity Raster Dataset
Nitrate Risk to the Water Table Aquifer 04/11/17 Nitrate Risk Raster Dataset
Sealed Wells 02/14/13 Sealed Wells Shapefile
Source Water Assessment Areas (SWAAs) - Groundwater 10/03/17 SWAA Shapefile
SWAAs - Surface Water 09/25/19 SWAA - Surface Water Shapefile
Special Well and Boring Construction Area (SWBCA) 04/07/16 SWBCA Shapefile
Transient Noncommunity Inner Wellhead Management Zones (IWMZs) 8/21/19 IWMZ Shapefile
Wellhead Protection Areas (WHPAs) 07/01/19 WHPA Shapefile
Updated Thursday, 28-Jan-2021 13:10:32 CST