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7/6/21 COVID-19 UPDATE: 

Thank you for your patience during the COVID-19 public health emergency. As staff at state agencies return to state office buildings, we anticipate operations will begin to resemble pre-pandemic conditions. However, we will continue to utilize online or virtual business practices that were found to be efficient over the past year.

Field work, including compliance inspections, continue to take place but you may notice an uptick in activity as conditions allow. In most cases, staff will continue to schedule pre-inspection calls with facilities to gather some of the information that would previously have been collected while on-site. These advance calls will also be used to discuss safety protocols for on-site visits that may be needed to complete all aspects of a compliance assessment.

Staff will keep their voicemails and availability messages up to date and will respond as they are able.

For the most up-to-date information, please visit our COVID-19 information webpage.

Approximately two thirds of people living in Wisconsin get their drinking water from groundwater. Adequate supplies of uncontaminated groundwater are crucial not only to the health of those families but also for the continued growth of agricultural production and cutting-edge industries in Wisconsin. We are continually confronted with new challenges in securing water of sufficient quality and quantity. Join us in working to protect and preserve the purity and quantity of Wisconsin's groundwater resources for today and future generations.

Look up groundwater and well data

Learn about the quantity and quality of groundwater in a geographic area.

Groundwater Coordinating Council (GCC)

The GCC is an interagency group directed by law to assist in the coordination and exchange of groundwater information.

GCC Report to the Legislature

The GCC prepares an annual report each year to summarize council activities and describe the state of groundwater.

Groundwater Research

Wisconsin's reputation for groundwater research is largely due to the well–established joint solicitation process.

Groundwater Education

Experience has shown that person-to-person outreach is the best way to engage the public in groundwater protection.

Source Water Protection

Source water protection helps prevent contaminants from entering sources of drinking water.

NR 140 Groundwater Standards Updates

The DNR periodically updates standards as part of a continuing commitment to protect public health and the environment.

Guidance for Public Comment

Current opportunities to comment on Drinking Water and Groundwater Program guidance
Guidance for Public Comment

Wisconsin’s Groundwater Law

The state groundwater law established the framework for a comprehensive approach to protect public health and welfare.
Wisconsin’s Groundwater Law

Drinking Water & Groundwater Study Group

The group serves as a forum for DNR to receive input from and provide information to stakeholder organizations.
Drinking Water & Groundwater Study Group

Special Casing Area Requirements for Arsenic

Special casing areas have been established for specific areas within the arsenic advisory area.
Special Casing Area Requirements for Arsenic

Groundwater StoryMap

Learn how groundwater moves and about our primary aquifers.
Groundwater StoryMap

Drinking Water, Wells And Groundwater Publications

Find publications listed by title or topic.
Drinking Water, Wells And Groundwater Publications