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Look up
data about the quality of groundwater near homes or businesses or get an estimate of groundwater availability.
the quality and quantity of groundwater for your family, business customers and community.
where your groundwater comes from and how it moves underground to reach your drinking water well and the lakes and streams you enjoy.

Look up groundwater data

To learn about the likely quantity and quality of groundwater in a geographic area, you’ll want to find data from several sources.

Groundwater quality and basic well parameters

Groundwater quality and basic well parameters can be found in the Groundwater Retrieval Network (GRN).

Local well testing data can be viewed using the Wisconsin Well Water Quality Viewer [exit DNR].

Well construction information

Well construction information, including geology and construction method may be helpful. Use the following links to locate reports on private wells that have been constructed across Wisconsin.

Groundwater levels

Groundwater levels measured in approximately 120 wells throughout Wisconsin, are available at the USGS web site:

Potential contamination sources

Potential contamination sources, including spill or remediation sites:

Additional groundwater data and analyses

Additional groundwater data and analyses available from:

Site-specific file information

Site-specific file information may be available from DNR for public water supply wells. To request records for these wells by unique well number, contact DNR by email. A well record security agreement will be required prior to receiving these well records.

We are happy to provide file information about wells in a location of interest (e.g., for property evaluation, due diligence or project design). Identification of wells in a location of interest is best done by you or others with information about the nature of the parcel or the scope of the potential project. To ensure complete data on which to base your site assessment, we recommend you search the on-line data systems described above using appropriate location parameters to identify specific wells for which we may then be able to provide additional file information.

Last revised: Tuesday June 27 2017