Milwaukee County Executive David Crowley and County Board President Marcelia Nicholson-Bovell signed legislation Wednesday afternoon reaffirming the county’s commitment to adhering to the goals of the 2016 Paris Climate agreement. 

“In Milwaukee County, we know that the climate crisis is a real, pressing threat to our environment, our economy, our health, and our quality of life,” Crowley said at the gathering beside other officials at the Urban Ecology Center of Washington Park. 

The international agreement called on nations to adopt policies to keep average global temperatures from increasing more than 2 degrees Celsius above pre-industrial levels. The United States joined nearly 200 global nations and states in signing onto the agreement under President Barack Obama. President Donald Trump pulled out of the agreement after he was sworn into office in 2017 and, after President Joe Biden rejoined the agreement, again in 2025.  Trump has called the agreement “unfair,” “one-sided,” and a “rip-off.” Since the Trump administration exited the agreement, state and local governments across the country have signaled their aims to stick with the agreement’s aims. 

Milwaukee County first signed onto the Paris Climate Accords in 2017. The county’s goal is to reach net-zero operational emissions by 2050. The event Wednesday was held on the first day of Earth Month.

Crowley praised Milwaukee’s efforts towards reducing carbon emissions and climate resiliency despite being in a time “when federal climate leadership is stepping back.” He said at the event that the county has reduced its emissions by nearly 50% since 2005. 

Nicholson-Bovell echoed the sentiment.

“Milwaukee County continues leading the way in the march toward a more environmentally sustainable community,” she said. “Our legislation recommits Milwaukee County to the Paris Agreement and Greenhouse Gas Endangerment Finding, because our children’s future depends on how we combat the climate crisis and build the equitable future we all deserve.” 

Crowley and Nicholson-Bovell were joined by Milwaukee County Supervisors Felesia Martin, Anne O’Connor and Sky Capriolo.

The Urban Ecology Center itself is an example of the steps Milwaukee County has taken towards reaching net-zero. The Washington Park center was recently renovated, becoming the first all-electric non-residential building in Milwaukee County, the center’s executive director, Jen Hense, explained. 

Now the building creates zero emissions and, with the planned installation of 100 new solar panels next week, is set to reduce its energy consumption by about one-third.

When the building was renovated, about 60% of its original structure was re-used. Some of the wood used in the renovations was also reclaimed from trees felled by Milwaukee County to combat the emerald ash borer insect. Bird-safe glass had also been installed, so far decreasing the number of collisions the building is responsible for. Surrounding the ecology center are ponds where people often fish, and the center works to re-introduce native plants to assist local ecosystems.

Hense stressed the importance of the Urban Ecology Center’s work. There are over 35,000 young people who attend outdoor and science programs at the county’s three Urban Ecology Centers, and more than 600,000 people visit the green spaces the center stewards in Riverside Park, Washington Park, and Menomonee Valley. 

“We know that these natural spaces, and hundreds more across the county — that are loved and cared for by amazing individuals and incredible environmental organizations — are important to our community, and are essential to protect for generations to come,” said Hense. “We know that combatting the global climate crisis can start right here in the county, and that this work is truly an act of environmental justice.” 

Nicholson-Bovell recalled growing up in a Milwaukee neighborhood where the nearest park didn’t have grass. She said that she was born premature with under-developed lungs, a condition worsened by the air pollution in her community. Studies have shown that increasing the number of urban trees would help improve polluted air conditions. 

“The environment that I grew up in had been ripped apart by the building of a freeway,” said Nicholson-Bovell. “And it was little kids like me who struggled to breathe in our communities. We didn’t have access to clean air, we didn’t have access to green space. And when I became a Milwaukee County supervisor, I promised that no child that I could help support would ever have to experience that again.”

Crowley said visiting the county’s parks reminds him “of just how lucky we are to have accessible access to beautiful green spaces like the one that we are in today.” He stressed that having this “in our backyard” should never be “taken for granted” while highlighting the success the county has already achieved at reducing its climate impact. “And it is because, and through, our office of sustainability that we remain focused on building green infrastructure, creating local sustainability jobs, and making sure that every single neighborhood is part of our climate solution,” said Crowley. 

Crowley said that partnership and collaboration with higher levels of government will be needed to fully accomplish the county’s climate goals. Yet that assistance is unlikely to come from the current federal government. Trump has repeatedly called climate change a hoax. Under Trump, the Environmental Protection Agency also repealed the 2009 endangerment finding that greenhouse gases threaten public health. During both Trump Administrations, climate data and even the words “climate change” have been purged from federal websites. Climate policies at the state level have also been blocked or frustrated by Wisconsin’s Republican-controlled legislature. 

Grant Helle, director of the Milwaukee County Office of Sustainability, said that “while federal climate leadership declines, Milwaukee County is taking action.” Helle said that local action is “not optional, but essential.” Helle noted that the new Marcia P. Coggs Health and Human Services Center will have on-site solar which will off-set over 11% of that facility’s energy use. The county is also re-thinking how building design could impact climate change, an issue which Helle said residents are concerned about. 

A stream of extreme weather events in recent months and years have likely fueled those concerns. Just weeks ago, people in parts of Wisconsin endured a historic blizzard, receiving so much snow that plow services needed to be shut down. Some Milwaukee communities still haven’t fully recovered from record-breaking amounts of rain and flooding that swept through the city in August. The Trump Administration has denied multiple requests for assistance and flood relief made by Wisconsin communities. 

Extreme heat gripped areas of the state in 2023, coinciding with increased wildfire activity within the state, while smoke from fires in Canada worsened air quality. Severe storms also hit Milwaukee and other Wisconsin communities in 2022 and 2021. O’Connor recalled the floods of 2010, where people were “literally canoeing down the street where I live in my district.” 

Crowley said that the August floods should be an indication that the midwest is not safe from climate change. 

“That tells us how do we build infrastructure that is resilient, and how do we think long term making sure that this planet is continuously livable for our young people and for many generations moving forward,” he said. 

Nicholson-Bovell said that the floods were devastating, but that climate change is a national issue. “My husband I met in St. Louis,” she said. “They had a historic tornado rip through the inner-city of St. Louis and they’re still scrambling to try and find housing for individuals.” 

Helle said that increased flooding, harsher heatwaves, and worse air quality are climate hazards Milwaukeeans are already experiencing. “It’s really unfortunate,” said Helle. “But what it does is go to show that we need to continue to make efforts here in Milwaukee County right now where we can to lower the impact on those residents that we ultimately serve.”