Environmental Management
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Groundwater section
Approximately two thirds of Wisconsin residents get their water supply from groundwater. Adequate supplies of uncontaminated groundwater are crucial not only to the health of our families but also for the continued growth of agricultural production…
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Molybdenum In Groundwater
Molybdenum (Mo) is a metallic element that is naturally present, usually at low levels, in the earth's crust. Trace amounts of molybdenum are necessary for human health and are obtained from common foods in the diet such as leafy vegetables, legumes…
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Groundwater forms
Groundwater Monitoring Inventory Form 3300-67 and Instructions [PDF] Groundwater Monitoring Well Information Form 4400-89 and Instructions [PDF] Monitoring Well Construction and Development Forms 4400-113A and 4400-113B and Instructions [PDF]…
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Look up groundwater and well data
To learn about the likely quantity and quality of groundwater in a geographic area, you will want to find data from several sources. Groundwater Quality and Basic Well Parameters Groundwater quality and basic well parameters can be found in the…
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Groundwater collaboration workgroup
Given the unique hydrogeology in certain regions of the state, specifically the karst geology in northeast Wisconsin, the Department of Natural Resources helped facilitate a groundwater work group to assess issues regarding landspreading and…
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Recommendations for arsenic in drinking water
Special Well Casing Depth Area for Outagamie and Winnebago Counties - Effective October 1, 2004 Special casing areas have been established by DNR for specific areas within the arsenic advisory area where naturally occurring arsenic contamination is…
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Arsenic – Occurrence in Wisconsin
Private well sampling Map 2014 - 2019 Beginning in 2014 the department has required arsenic sampling when pump work is done on existing wells. The map is from the 35,000+ samples collected over the first four and a half years. The map depicts the…
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Special casing area requirements for arsenic
For Outagamie and Winnebago counties (effective October 1, 2004)
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Arsenic
Arsenic is a naturally occurring element found in soil and bedrock throughout Wisconsin. Under certain conditions, arsenic can be released into groundwater and enter water wells. Long-term exposure to arsenic in drinking water is known to increase…