Property/Site Owners
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St. Louis River Area of Concern
Public Review and Input Opportunity Draft 2024 Remedial Action Plan Update for the St. Louis River Area of Concern The DNR is seeking public feedback on the draft 2024 Remedial Action Plan Update for…
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Wisconsin’s Great Waters Annual Photo Contest and Writing Project
Subscribe to receive updates and news about the Great Waters Photo Contest and Writing Project, including when the next calendar is available. Each year, the DNR's Office of Great Waters holds a photo contest and writing project. These…
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Air Toxics and Mercury
Air toxics, also called hazardous air pollutants (HAPs), are substances either known or suspected to cause cancer or other serious health problems, including damage to the immune, neurological, reproductive and respiratory systems. These pollutants…
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Sulfur Dioxide NAAQS Implementation
The U.S. Environmental Protection Agency (EPA) sets National Ambient Air Quality Standards (NAAQS) for criteria pollutants, including sulfur dioxide (SO2). On June 2, 2010, EPA revised the SO2 standard, establishing a one-hour primary standard of 75…
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Air Pollution Control Rules
Wisconsin's State Legislature creates and revises the Wisconsin Statutes
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Refrigerant Recovery Program
Wisconsin law prohibits the release of regulated refrigerants into the atmosphere. The release of regulated refrigerants generally occurs as refrigeration and air-conditioning equipment is salvaged or dismantled for disposal. The refrigeration…
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Particle Pollution
Particulate Matter (PM) pollution consists of solid particles or liquid droplets suspended in the air. Fine particles (PM2.5) may be emitted directly into the atmosphere but are more commonly created by reactions of other pollutants, such as…
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Ozone
Ozone is a gas that occurs in both Earth's upper atmosphere and at ground level. When ozone is at ground level, it is a major component of smog and can cause a number of health problems for humans and other living things. Because of this serious…
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Air Education and Outreach
Public involvement is essential to the DNR's mission to protect the environment and human health through our programs and regulations. The Air Management Program has several resources to help members of the public stay informed about air quality…
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Air Quality News and Subscriptions
The DNR uses GovDelivery to help us more efficiently manage our communications and offer more subscription options to our customers. To learn more about these subscriptions and to sign up, please click on the "Subscriptions" tab below.Air NewsAir…