Seafood is very safe in the area if bought at the store, the warf or at local seafood restaurants. I would not eat any fish caught in the Potomac, that will send you to the hospital in a minute.
Just had some the other day, im still here. Id say its about as safe as you walking into Chipotle
I really can't say, I don't eat seafood when I visit up North. I'm a southern born.
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