
Nuclear Waste Stored on the Coast
Diane Edmonds
Spent nuclear fuel at San Onofre sits in steel canisters near the Pacific. With no national repository, these hazardous materials remain a long-term risk.
Across the U.S., shuttered nuclear plants leave behind a toxic inheritance: spent nuclear fuel with no permanent home. This waste is not just inconvenient; it remains hazardous for hundreds of thousands of years, far beyond any human planning horizon. Yet, in the absence of a national repository, utilities store it onsite in steel canisters or concrete casks, often near water, sometimes in areas vulnerable to natural disasters.
A Silent Legacy
Unlike other industrial byproducts, nuclear waste cannot simply be treated or buried safely with existing technology. The materials retain intense radioactivity and heat, requiring secure containment that lasts generations. Over time, even the most robust storage systems face risks from corrosion, earthquakes, and rising seas, a problem exemplified by California’s San Onofre plant. Here, the spent fuel sits in relatively thin steel canisters just steps from the Pacific, originally designed for temporary storage, now potentially remaining in place indefinitely.

A Hazard Overlooking the Ocean
Envato
From above, San Onofre shows the scale of stored nuclear waste. Without permanent disposal, coastal plants face decades of hazard management.

A Hazard Overlooking the Ocean
Envato
From above, San Onofre shows the scale of stored nuclear waste. Without permanent disposal, coastal plants face decades of hazard management.
The National Picture
San Onofre is not an isolated case. Across the country, from Illinois to New York, communities host similar storage facilities in proximity to populations, rivers, or coastlines. Many of these sites were never intended for permanent storage, and yet, decades later, they remain the frontline for managing one of the nation’s most hazardous legacies.

Balancing Energy and Legacy Risks
Envato
Nuclear power plants next to the California’s energy mix includes nuclear and solar. While renewables grow, shuttered nuclear sites continue to pose long-term environmental challenges. panels in California against a blue sky

Balancing Energy and Legacy Risks
Envato
Nuclear power plants next to the California’s energy mix includes nuclear and solar. While renewables grow, shuttered nuclear sites continue to pose long-term environmental challenges. panels in California against a blue sky
The Urgency of Action
Without a coordinated federal plan, local communities bear the brunt of long-term risk. Investment in permanent solutions, improved oversight, and contingency planning is not just prudent — it is necessary to prevent these forgotten hazards from becoming future catastrophes. Nuclear waste is not gone. It is buried in plain sight, and its consequences will echo for generations unless decisive action is taken.