Stop unchecked data center development

Healthier Future for Wisconsin

ABOUT CLEAN WISCONSIN

Bold Action for a
Cleaner Wisconsin

Your Environmental Voice Since 1970

Since 1970, we’ve defended Wisconsin’s air, water, and land with bold action. From landmark legal wins to groundbreaking research, we turn environmental challenges into lasting progress.

Our Mission: Clean Wisconsin works to combat climate change and pollution in our air, water and land to ensure a healthy future for every Wisconsin community.

Our Accomplishments

A Legacy of Environmental Victory

Real progress, real impact. From cleaner air to safer water, we’re making Wisconsin a healthier place to live—one victory at a time.

Explore Key Victories
3

foundational cases that established the right to sue for the environment.
40

percent reduction in Mercury emissions from WI power plants
20

percent of the Earth ‘ s freshwater resources protected through the Great Lakes Compact
6

gigawatts of clean wind and solar energy approved in Wisconsin.

Our Approach

Science & Analysis

We’re not just advocates—we’re experts. As the only environmental group in Wisconsin with a dedicated science team, we have the knowledge and credibility to fight smarter and win bigger. Backed by research and legal expertise, we turn advocacy into impact.

Leading with Science

Our Approach

Legal Action

For decades our legal team has fought and won high-impact cases to protect Wisconsin’s air, water, and natural places—from curbing agricultural runoff to challenging weak air pollution permits. When policy fails, we use the power of the courts to defend the environment and public health.

Defending Wisconsin’s Environment

Our Approach

Policy Advocacy

We work with lawmakers, agencies, and communities to advance environmental policies that protect Wisconsin’s air, water, land, and climate—guided by science and driven by our shared vision for a clean Wisconsin.

Shaping Policy

Our Approach

Community Engagement

From severe storms to smoke-filled skies, climate change is already affecting communities across Wisconsin. Clean Wisconsin partners with local governments and community organizations to prepare for extreme weather, reduce pollution, and build long-term resilience—starting with the people most impacted.

Community Engagement in Action

Our Approach

Amplifying Your Voice

Real change starts with people who speak up. Clean Wisconsin helps people across the state take meaningful action—whether it’s contacting legislators, attending hearings, or organizing in their communities to protect our air, water, and climate.

Amplifying Your Voice

Meet the Team

The Experts Behind the Advocacy

It takes more than passion to protect Wisconsin’s environment—it takes knowledge, strategy, and experience. Our team of scientists, attorneys, policy experts, and advocates works every day to defend our state’s air, water, and land.

Meet the Entire Team

STAY INFORMED

Updates from the Front Lines

Press Releases

Clean Wisconsin Intervenes in Oracle Lawsuit Against State

Clean Wisconsin is taking legal action to protect more than a million energy customers in the state as AI data centers cause demand to skyrocket.

See News

Latest News

Expert Insights

Partnering for progress: Wisconsin’s environment needs a team

Clean Wisconsin is building an all-star team to engage with Wisconsinites about environmental issues that impact them most. 

Read More
Rural Energy Campaign Manager Rich Coelho presents about wind energy to a packed room in Columbia County.

Expert Insights

Podcasts

Do AI Data Centers Hurt Your Health?

In this episode, we’re talking about plastic waste in the grocery store and how to take control of the plastics that wind up in your shopping cart.

Listen Now

Latest Podcast Episode

Health Briefs

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.

View Health Brief

Pollution & Your Health

Sign Up

Join the fight with Clean Wisconsin

Sign Up For Email Updates

"*" indicates required fields

Full Name*