Nature

Swimmable Cities Movement: Chicago, Paris And London Lead Push To Clean Urban Rivers For Public Swimming

A grassroots alliance called Swimmable Cities is working to make polluted urban waterways clean enough for recreational use again, with major cities like Chicago, Paris and London investing in infrastructure upgrades to combat decades of sewage, runoff and environmental damage.

Chicago, Paris and London Lead Urban River Cleanup Movement

For most of us, the thought of jumping into a river, especially one in a major city, is downright inconceivable. Between pollution, sewage and runoff, city waterways are considered almost as nasty as a sewer. But this could change in the near future.

There is a new movement that is taking the cleaning of urban rivers into their own hands. Swimmable Cities is a grassroots alliance dedicated to making rivers clean enough for recreational use again. The idea is ambitious, but executing it is an even greater challenge.

Throughout history, cities have used nearby rivers as waste sites. Regulations and treatment systems have helped the quality of water over the last few decades, but plenty of sanitary issues still remain. In just the United States, hundreds of billions of gallons of waste flood into waterways annually due to old infrastructure and heavy rainfall. Plus, we can't forget the runoff that comes from rain and storms, which washes oils, chemicals and debris from the street into rivers, adding another layer of nastiness into our waterways.

Photo Courtesy of TheInfinitLoop — Photo courtesy of TheInfinitLoop

There is hope and progress being made. Chicago, for example, held its own public river swim in nearly 100 years. Meanwhile, Paris had a years-long initiative to clean the Seine for Olympic events in 2024, and has now open that river to the public too. London is next on the docket, hoping to make parts of the River Thames safe for recreational swimming within the next decade. This proves that steps are being taken to make swimmable waterways a tangible reality and not just a lofty idea.

The idea of swimming in your local river or water system is exciting, but the benefits go way deeper than just fun. Cleaner rivers improve ecosystems, support wildlife, and even help cut down the risk of flooding. Beyond that, this can reshape how people interact with their cities as a whole. Instead of rivers being viewed as untouchable, locals can reclaim them as spaces for gathering, leisure, and culture.

But still, we have a long way to go - mainly due to infrastructure. The majority of urban sewer systems are outdated and the cost to upgrade them isn't cheap, which is slowing down the progress. Oil and sewage spills, combined with slow cleanup responses, highlight the scale of the challenge and the fragility of aging infrastructure.

For us to once again swim in our local waterways comes down to a simple question: Can modern cities undo decades worth of environmental damage? The answer is complex and probably can't be answered today. But as organizations like Swimmable Cities and cities themselves take the necessary steps to invest in cleaner water, this idea of one day swimming downtown may not be as impossible as it once seemed.

weather.com content writer Toby Adeyemi bridges the gap between trends and culture, a skill he's honed over years at Yahoo Sports, EBONY, and Essence. Toby's built a career finding where sports, music, and culture intersect, and now he's bringing that same lens to weather, exploring how atmospheric events shape the moments, communities, and conversations that matter most.