Lake Erie's Digital Transformation into a Global Water Research Powerhouse
An aerial view of downtown Cleveland, Ohio, showcases Lake Erie in the background, a once-troubled body of water now undergoing a remarkable metamorphosis. Historically, this Great Lake served as a dumping ground for pollutants, but it is currently being seeded with hundreds of sensor buoys, positioning it as the world's largest digitally connected freshwater research facility.
From Industrial Wasteland to Cutting-Edge Laboratory
In the 1960s, the lakes and rivers around Cleveland were so contaminated with petrochemicals and other hazardous substances that they frequently ignited. While water quality has improved since the era when steel mills and chemical plants used it as an industrial dumping ground, Lake Erie continues to grapple with significant pollution challenges. The 2025 State of the Great Lakes report, released last month, indicates that Lake Erie still ranks poorly due to chemical runoff, consistently placing among America's top five most-polluted lakes.
Despite these issues, over 5.5 billion gallons of freshwater are extracted from the lake daily—enough to fill 8,333 Olympic-size swimming pools—to meet industrial and consumer demands. With cities like Detroit, Cleveland, and Buffalo experiencing growth for the first time in over 50 years, and datacenter construction on the rise, the need for clean water in this region is set to skyrocket in the coming years.
Cleveland's Pioneering Water Technology Initiative
This escalating demand has spurred a movement among organizations in Cleveland, which draws 300 million gallons of water from the lake daily for residents, and neighboring communities to develop a platform for testing technologies that measure and monitor water quality. In the coming weeks, Cleveland-based researchers will deploy hundreds of sensor buoys to observe and detect E. coli, algal blooms, turbidity levels, and more than a dozen other water-related factors, collaborating with companies and researchers worldwide.
Bryan Stubbs of the Cleveland Water Alliance, a non-profit working with approximately 300 companies, research institutions, and government agencies, explains the motivation behind this initiative. "Several years ago, our civic leaders were asking: 'Why aren't we doing more with water? It's our biggest natural asset.' We figured our biggest issue around water was the lack of water tech," says Stubbs. "This idea of test bedding became kind of the secret ingredient of what we've done here."
These efforts have transformed Lake Erie, a body of water nearly the size of Belgium, into the largest digitally connected freshwater body globally. Hundreds of sensor buoys are now dotted across the western section, providing real-time data on wave height, contaminant levels, and pollution across 7,750 square miles, both offshore and on land.
Innovative Projects Addressing Pollution and Climate Challenges
Case Western Reserve University in Cleveland has incubated research for a pilot program technology capable of capturing 90% of microplastics down to 50 microns in washing machines, preventing these materials from re-entering Lake Erie. The lake is particularly vulnerable to pollution due to its shallow depth and tendency to warm quickly in spring and summer. Other projects are recording solar radiation, dissolved oxygen levels, and water and air temperatures. Korean companies have also visited the area to test electrochemical water treatment methods in Lake Erie's water.
"Lake Erie is 2% of the Great Lakes' water but 50% of its diversity ... because it's the shallowest," says Stubbs. "And it's warming quicker each year." This warming is exacerbated by over 12 million residents and businesses in its watershed, whose waste regularly ends up in the lake. The western section, spanning 210 miles wide, suffers especially from agricultural runoff, with phosphates entering via the Maumee River.
Persistent Pollution Issues and Collaborative Solutions
Environmentalists highlight the immense challenges in cleaning up the lake. Sandy Bihn of the Lake Erie Waterkeeper, based in Toledo, Ohio, notes, "Scientists and others say we need a 40% phosphorus reduction to minimize the blooms. About 90% coming into the western Lake Erie basin is from agricultural runoff." While efforts to reduce commercial fertilizer have led to a 50% decrease in phosphorus entering Lake Erie, manure levels have risen due to increasing livestock operations in the area. "We're not getting anywhere. The manure problem is the core problem, the growing problem," Bihn added.
Farming is not the sole contributor to Lake Erie's pollution. Last year, Campbell's soup company admitted to polluting the Maumee River over 5,400 times from a local plant between 2019 and 2024. In Toledo, city authorities spent about $500 million on water treatment upgrades after severe algae blooms in 2014 rendered the water poisonous, leaving hundreds of thousands of residents without water for three days. Harmful algae blooms, driven by prevailing winds from the west, can spread east into populated areas like metro Cleveland.
Advancing Safety and Monitoring Technologies
This urgency fuels the Cleveland Water Alliance's mission to position Lake Erie as an open-air research facility. In Avon Lake, a coastal town 20 miles west of Cleveland, administrators and the Alliance have partnered with a Korean company to develop an on-site system for producing commercial-grade sodium hypochlorite, the active ingredient in chlorine bleach. This pilot project, the first of its kind in North America, eliminates the need to transport hazardous chlorine gas by truck or train.
Rob Munro of Avon Lake Regional Water, a utility serving about a quarter-million customers across northern Ohio, states, "We were looking at getting away from chlorine gas for disinfection, and we looked at on-site generation. The big thing for us is the safety standpoint, and there are supply chain problems that are eliminated."
The next challenge for Stubbs and the Alliance involves promoting technologies for wintertime monitoring of aquatic life activity, behavioral changes, and water turbidity levels. Higher turbidity can lead to frazil ice buildup, potentially blocking water intake pipes during cold periods. "The more buoys we have out there," says Stubbs, "the more data we can make available to let operators know what's happening given wind conditions and currents."
