Protecting Wisconsin's Groundwater Through Comprehensive Planning
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  Green County
  This report provides the most current information and data found, as of May 2007, unless otherwise noted.
  Green County groundwater findings reports Green County full report Switch to Green 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. Green County has 8 municipal water systems.  Table showing water systems in Green County

GROUNDWATER PROTECTION POLICIES   Table showing water systems in Green County

  • 4 of 8 municipal water systems in Green County have a wellhead protection plan: Albany, Browntown, Monroe, and Pleasant View Nursing Home.
  • 0 of 8 municipal water systems in Green County have a wellhead protection ordinance.
  • Green County has adopted an animal waste management ordinance.


  • Over $8 million have been spent on petroleum cleanup in Green County from leaking underground storage tanks, which equates to $238 per county resident.
  • No municipal water systems in Green County have spent money to reduce nitrate levels.

GROUNDWATER USE  Water use figure

  • From 1979 to 2005, total water use in Green County has increased from 6.8 million gallons per day to 8.8 million gallons per day.*
  • The increase in total water use is due primarily to an increase in irrigation.
  • The proportion of county water use supplied by groundwater has consistently been about 97% 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 Green County can be seen in the FULL REPORT or accessed through the map link above.


  • 87% of 974 private well samples collected in Green County from 1990-2006 met the health-based drinking water limit for nitrate-nitrogen.   Nitrate map
  • A 2002 study estimated that 62% of private drinking water wells in the region of Wisconsin that includes Green 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
  • 21,163 acres of land in Green County are in atrazine prohibition areas. Map showing atrazine prohibition areas in Green County
  • 100% of 10 private well samples collected in Green County met the health standard for arsenic.


  • There are 33 open-status sites in Green County that have contaminated groundwater and/or soil. These sites include 18 Leaking Underground Storage Tank (LUST) sites, 14 Environmental Repair (ERP) sites and 1 spill site.   BRRTS map
  • There is 1 concentrated animal feeding operation in Green County.
  • There are no licensed landfills in Green County.
  • There are no Superfund sites in Green County.

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Green County full report Green 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