Potomac Sewage Spill Hurts Oyster Industry, But Not for Obvious Reasons

Water quality downstream is safe, but fear of contamination has devastated oyster sales and harvesting

Published on Feb. 28, 2026

Got story updates? Submit your updates here. ›

A recent sewage spill into the Potomac River has raised concerns about water quality, leading Maryland to restrict shellfish harvesting in the area. However, even miles downstream where water quality is safe, oyster harvesters are struggling to sell their catch due to fears of contamination, hurting their livelihoods.

Why it matters

The Potomac River is a vital waterway for the regional oyster industry, and disruptions to harvesting and sales can have significant economic impacts on watermen and associated businesses. This story highlights how public perception and fear can sometimes outweigh the actual environmental realities, underscoring the need for clear, science-based communication around such incidents.

The details

While water quality testing near the sewage spill site has shown elevated E. coli levels, further downstream at National Harbor the water is within safe recreational limits. However, Maryland has still restricted shellfish harvesting as a precaution from the Harry Nice Bridge up to Nanjemoy Creek. This has devastated the market for oyster harvesters like Robert T. Brown, who work well past the restricted zone. Oyster packers and buyers are refusing to purchase any oysters from the Potomac, fearing contamination, even though the water quality is safe.

  • The sewage spill into the Potomac River occurred in late 2025.
  • Maryland announced a two-week extension of the commercial oyster season on February 20, 2026 to make up for time lost during the winter freeze.

The players

Robert T. Brown

The head of the Maryland Watermen's Association, who makes his living harvesting oysters along the Potomac River.

Maryland Department of Natural Resources

The state agency that announced the two-week extension of the commercial oyster season.

Got photos? Submit your photos here. ›

What they’re saying

“It has devastated our market. The people who shuck the oysters and stuff and ship them to different states, don't want no oysters coming out of the Potomac because they afraid of what it may be.”

— Robert T. Brown, Head of Maryland Watermen's Association (WTOP)

“We've just got to wait and weather the storm on it. It will rectify itself. But once you put something in a person's head that something may not be safe to eat, it's hard to overcome that.”

— Robert T. Brown, Head of Maryland Watermen's Association (WTOP)

What’s next

Maryland's Department of Natural Resources announced a two-week extension of the commercial oyster season to make up for time lost during the winter freeze, which should help offset some of the economic impacts on watermen.

The takeaway

This incident highlights how public perception and fear can sometimes outweigh the actual environmental realities, underscoring the need for clear, science-based communication around such incidents to support local industries that rely on natural resources.