Potomac River
Potomac River has been home to ample toxic substances and its common knowledge across the states. While some official reports would tell you the level of toxicity in the waterbody has been reduced, it is still unsafe to swim!
This river received a high level of water wastes, and we don’t need to mention just how harmful those things can be to the human body. If you don’t want to subject your skin to infection or something worse, you’re better off not touching the waters of this place. You could explore other sites nearby, though!