Environmental Management
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Annual Air Pollution Fee Structures for Non-Title V Sources Required to Have an Air Permit
There are two levels of annual air pollution fees for businesses that are considered non-Title V sources. A non-Title V source is a business required to have an operation permit, but not a major source permit. There is a separate fee structure for…
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Air Emission Inventory Contacts
Contact the DNR's Air Program for specific questions about emission inventory reporting and software. Facility-Specific Assistance For facility-specific questions, use the Air Permit Search tool. Each facility page in the tool lists a DNR contact…
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Radon in private well water
Radon is a substantial health risk in many Wisconsin homes. There is a risk of developing cancer from long term exposure to radon in air and water. If you get your drinking water from a private well, this page will guide you in evaluating whether…
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Test your private well water annually
Make sure you're serving your family safe drinking water. While most private water wells in Wisconsin provide safe drinking water, some may become contaminated with bacteria and other contaminants that are not filtered out when the water soaks into…
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NR 812 rule changes
The rule change to provide for the use of Type IL cement in the grouting and sealing of wells was approved by the Wisconsin Natural Resources Board on May 17, 2023, and became effective on Nov. 1, 2023.
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Accurately locating wells and drillholes for applications and reports
Chapter NR 812, Wis. Adm. Code, requires the latitude and longitude coordinates of a well or drillhole to be reported on high capacity well applications, well construction reports and well filling and sealing reports. Determining Latitude and…
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NewsBits newsletter
NewsBits is an electronic newsletter containing updates, reminders, interesting data and news for Wisconsin's drilling and pump installing industry. NewsBits is produced three to four times a year by DNR's Drinking Water & Groundwater…
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Licenses and registrations
In Wisconsin, a license or registration is required to engage in the business of pump installing, water well drilling and heat exchange drilling. Licensing authority is established under s. 280.15, Wis. Stats. [exit DNR]. Licensing laws are…
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Information for private well owners
Private wells are wells that are not part of a public water supply. Private wells have fewer than 15 connections and serve fewer than 25 people. They are usually wells that serve a single home or farmhouse. Unlike public water systems, protection…
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Private well construction in granite formations
Building a new home in the country usually means you will also need to have a well drilled. In central and northern Wisconsin, drinking water wells must be drilled into a layer of hard, crystalline bedrock that underlies much of the upper Great…