Environmental Management
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Drinking Water and Groundwater Guidance
We welcome your input on all Drinking Water and Groundwater Program guidance. The guidance available for comment tab lists guidance that is being developed or revised. Feedback related to the documents posted should be emailed to the staff member…
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Surface Water and Fish Tissue PFAS Sampling
The DNR's Water Quality Program, in cooperation with the Fisheries Management Program and other partners, is conducting a multi-year, statewide monitoring project to sample fish tissue and water chemistry at select sites around the state near known…
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Reporting Your Data
The following tips will help you report your Clean Boats, Clean Waters data. Selecting a Landing If you are not sure which landing to choose, select a landing and click "Show Map" to see where it is located. If the landing you need is not listed…
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Private Water Advisory Council
The Private Water Advisory Council (PWAC) was established by the DNR's Private Drinking Water section of the Drinking Water and Groundwater (DG) program.The group serves as a forum to provide an avenue for communication with the well drilling…
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Annual Drinking Water Reports
The DNR's annual drinking water report and interactive map highlight efforts to help public water systems provide safe and adequate supplies of drinking water in our state. Wisconsin's 11,000+ public water systems have a high rate of compliance with…
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PFAS and Foam on Waterways
Foam is a common occurrence on Wisconsin waterways and can often be observed floating on the surfaces of lakes and rivers. Surface water foam can form as a result of natural processes or from human-caused discharges such as runoff of contaminants…
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Transient Non-Community (TN) Resources
A transient non-community water system (TN or TNCWS) is a public water system that provides water in a place such as a gas station or campground where people do not remain for long periods of time. Transient Non-Community Water System Fact Sheets…
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Manganese and Drinking Water
Manganese is a common, naturally-occurring element found in rocks, soil, water, air and food. Manganese is an essential element and is needed to form healthy bones, produce glucose and heal wounds. Small amounts of manganese are part of a…
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Plan Review of Municipal, Industrial and Pretreatment Wastewater Systems
Information on the content and format requirements of plans, specifications and engineering design reports are listed below for the plan review of municipal, industrial and pretreatment wastewater systems.
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Support Aquatic Invasive Species Research
Say Yes to Lakes!You don't need to register a boat to donate. Your donation supports aquatic invasive species work at DNR and provides grants to scientists studying ways to improve invasive species prevention and control. Donate Now