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Freezing temperatures can test our municipal water systems as well as the pipes inside our homes. Water Commissioner Alex Margevicius explains how the Cleveland Division of Water keeps 1.4 million people supplied with safe drinking water when temperatures plunge and aging water mains face their toughest days of the year.

From Cleveland's offshore water intakes to your homes and businesses, we trace the journey clean water makes and share some simple measures you can take to prevent frozen water lines and damage.

Here at the Sewer District, we often talk about the urban water cycle as it pertains to wastewater treatment: from residential use to our treatment plants and back to Lake Erie. Our conversation with Alex continues the water's route back in from the Lake and to our homes.

Visit Cleveland Water to learn more about tours, cost-saving programs, and household tips.

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A lake that learns can change a region. Sam Martin, Director of Communications and Engagement at Cleveland Water Alliance (CWA), shares how Lake Erie has become the world’s largest digitally-connected freshwater test bed—and why that matters for public health, utility costs, and the next wave of water-tech jobs.

Sam walks us through the water economy—everything from maritime logistics and treatment plants to sensing, analytics, and policy—and explains why real-world testing beats lab demos every time. The CWA acts as matchmaker between innovators and end users, backing pilot projects with insurance and support. It makes a compelling case for Cleveland as a freshwater innovation capital.

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A new crew of superheroes, the Lake Erie League, is turning the hidden systems under our feet into comic-book stories for kids and teachers to use in the classroom. Across eight origin tales, these Northeast Ohio characters mirror very real aspects of the Sewer District's work, from massive tunneling machines whose creations tame storm overflows, to a miniaturized lab technician who can detect toxins no human eye could witness.

We start with Mackenzie, inspired by the tunnel boring machine behind Project Clean Lake, who illustrates how big civil infrastructure projects matter when big rainstorms hit. Spectra brings lab science to life with tests that our students can replicate in class, while Rover and Dr. Tao tackle tunnel inspections and the microscopic world of wastewater treatment. Botanica's story is rooted in Green Infrastructure, and Viz and Overwatch round out the Lake Erie League with "sewer CSI" adventures.

Teachers can request print copies of the new comic book for their classrooms and access the stories and activity sheets at neorsd.org/league.

Meet the Lake Erie League creators:

Joe Sieracki, writer

Miguel Hernandez, illustrator