Protecting Wisconsin's Groundwater Through Comprehensive Planning
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  Trempealeau County
  This report provides the most current information and data found, as of May 2007, unless otherwise noted.
  Trempealeau County groundwater findings reports Trempealeau County full report Switch to Trempealeau County full report


  • Wisconsin has nearly 11,500 public water systems which meet the daily water needs of about 4 million people. Public water systems that are owned by a community are called municipal water systems. Trempealeau County has 13 municipal water systems.  Table showing water systems in Trempealeau County

GROUNDWATER PROTECTION POLICIES   Table showing water systems in Trempealeau County

  • 8 of 13 municipal water systems in Trempealeau County have a wellhead protection plan: Arcadia, Blair, Ettrick, Galesville, Independence, Pigeon Falls, Strum and Whitehall.
  • 4 of 13 municipal water systems in Trempealeau County have a wellhead protection: Arcadia, Ettrick, Galesville and Independence.
  • Trempealeau County has adopted an animal waste management ordinance.


  • Over $8 million has been spent on petroleum cleanup in Trempealeau County from leaking underground storage tanks, which equates to $318 per county resident.
  • 1 municipal water system in Trempealeau County has spent money to reduce nitrate levels.

GROUNDWATER USE    Water use figure

  • From 1979 to 2005, total water use in Trempealeau County has increased from about 5.5 million gallons per day to about 11.2 million gallons per day.*
  • The increase in total water use over this period is due to increases in all use categories except irrigation which increased significantly after 2000.
  • The proportion of county water use supplied by groundwater has been consistently greater than 93% during the period 1979 to 2005.*
  • Water use in Wisconsin is generally estimated for the following categories:
    • Domestic
    • Livestock
    • Aquaculture
    • Irrigation
    • Industrial
    • Commercial
    • Public use and losses
    • Thermoelectric or mining*

* Thermoelectric and mining data are not considered in water-use tables or figures on this web site. Thermoelectric-power water use is the amount of water used in the process of generating thermoelectric power. The predominant use of water is as non-contact cooling water to condense the steam created to turn the turbines and generate electricity.



  • Wisconsin has abundant quantities of high-quality groundwater, but once groundwater is contaminated, it's very expensive and often not technically possible to clean.
  • An evaluation of the susceptibility of groundwater to contamination in Trempealeau County can be seen in the FULL REPORT or accessed through the map link above.


  • 89% of 347 private well samples collected in Trempealeau County from 1990-2006 met the health-based drinking water limit for nitrate-nitrogen.   Nitrate map
  • A 2002 study estimated that 52% of private drinking water wells in the region of Wisconsin that includes Trempealeau County contained a detectable level of an herbicide or herbicide metabolite. Pesticides occur in groundwater more commonly in agricultural regions, but can occur anywhere pesticides are stored or applied.   Statewide pesticide map
  • 2,590 acres of land in Trempealeau County are in atrazine prohibition areas. Map showing atrazine prohibition areas in Trempealeau County
  • No arsenic data were found for private wells in Trempealeau County.


  • There are 35 open-status sites in Trempealeau County that have contaminated groundwater and/or soil. These sites include 17 Leaking Underground Storage Tank (LUST) sites, 13 Environmental Repair (ERP) sites and 5 spill sites.  BRRTS map
  • There are 2 concentrated animal feeding operations in Trempealeau County.
  • There are no licensed landfills in Trempealeau County.
  • There are no Superfund sites in Trempealeau County.

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Trempealeau County full report Trempealeau County full report

For more information about this web site, its contributors, and the data contained herein, click here.

For assistance in comprehensive planning, please contact Lynn Markham, UW-Stevens Point.
For assistance on groundwater, please contact Charles Dunning, USGS.
Page contact: Webmaster, USGS
Page last updated: January 14, 2008