Stop unchecked data center development

Healthier Future for Wisconsin

Leading with Science

At Clean Wisconsin, we don’t just follow the science—we are actively conducting research and analysis. Our in-house science team is the only one of its kind at an environmental nonprofit in the state, grounding everything we do in evidence, research, and results. From research briefs that inform legislation to expert reports that support new clean energy development and public health, science drives our mission and sharpens our strategies.

Turning Research Into Results

Science isn’t just a backdrop to our advocacy—it’s the foundation. Our science team investigates the most pressing environmental challenges facing Wisconsin, then translates that data into action. Whether we’re testifying at the Capitol, modeling clean energy scenarios, or mapping pollution exposure, our scientific work is shaping a healthier, cleaner future for everyone in Wisconsin

Conducting in depth research and modeling

Guiding policy with technical analysis

Supporting legal cases with data and expert testimony

Collaborating with communities and public health researchers

 Find an Expert

Human Health Impacts of Pollution

Exposure to pollution in our air, water, and food isn’t just an environmental issue—it’s a public health crisis. That’s why Clean Wisconsin is conducting critical research to identify pollution hotspots, trace exposure routes, and document the human toll. These health briefs provide an overview of the many pollution issues facing Wisconsin.

Our Air

Wildfire Smoke in Wisconsin: Effects on Health

The number of days that Wisconsin’s air quality is affected by wildfire smoke has risen dramatically over the past 15 years, causing increased death and disruption in the state.

Hazardous Air Pollutants & Environmental Justice in Wisconsin

Hazardous Air Pollutant (HAPs) can cancer or other serious health effects but there are currently no air quality standards for HAPs.

Health Benefits of Clean Energy in Wisconsin

By displacing polluting fossil fuels, clean energy not only mitigates climate change but also results in improved local air quality, providing a health benefit to everyone. In Wisconsin the monetary value of these health benefits is greater than the cost of generating electricity from solar and wind.

Our Water

PFAS and Health: Contamination in Private and Public Wells in Wisconsin

Once PFAS get into the environment or our bodies, they do not break down, and environmental contamination continues to build as more PFAS are introduced to the environment. Any exposure to PFAS can pose health risks.

Common Pesticides Used in Wisconsin & Potential Health Harms

Pesticides are widely used in Wisconsin to control weeds and pests that threaten crop yields, but their use comes with health, environmental, and ecological consequences. 

Nitrates & Health: Drinking Water in Wisconsin

Nitrates are Wisconsin’s most widespread groundwater contaminant, threatening the drinking water of over two-thirds of Wisconsinites who rely on groundwater as their primary source of drinking water.

See All Health Briefs

Latest News from our Science Team

Under the Lens: What we’re learning about wildfire smoke in Wisconsin

Smoky skies from distant wildfires in Canada and the Western United States have becomes an increasingly frequent occurrence here in Wisconsin.

Read More

Under the Lens

Clear As Mud: Hidden thirst of data centers

Large energy demands, and often corresponding water needs, pose a risk to Wisconsin’s water resources.

Read More

Expert Insights

Pesticides and Our Bodies

What we know about the impacts of neonic pesticides on our bodies and how to limit exposure.

Listen Now

Latest Podcast

Clean Wisconsin Analysis Shows Dramatic Health Harms of Wildfire Smoke in Wisconsin

Wildfire smoke exposure accounts for an estimated 250 premature deaths in Wisconsin every year, according to a new analysis from Clean Wisconsin.

See News

Press Releases

In Depth Research & Analysis

From nutrient runoff in our waterways to air pollution and land degradation, our science team investigates the root causes of Wisconsin’s most pressing environmental challenges—and shares evidence-based insights to drive smarter policy and lasting solutions.

Natural Climate Solutions Roadmap

This first-of-its kind analysis uses peer-reviewed science and on-the-ground case studies to identify pathways toward net-zero greenhouse gas emissions in Wisconsin’s agricultural sector.

Offsite Water Use of Data Centers

Data centers require a lot of energy. If they use non-renewable sources, their indirect water use could rival that of entire Wisconsin cities.

Wisconsin AI Data Center Power Needs Analysis and Comparison

1 gigawatt (GW) of data center demand equals the power needs of more than a million Wisconsin homes.

The Cost of Nitrate Contamination in Wisconsin’s Drinking Water

Wisconsin faces a growing public health crisis caused by widespread nitrate contamination in our drinking water.

See All In-Depth Analysis

Join the Fight for Our Water

Sign Up For Email Updates

"*" indicates required fields

Full Name*