According to the Reading Eagle. emergency personnel were called to an area known as "The Rock" in Tilden Township, Berks County around 6:15pm, Sunday.
The 20 year old victim was reportedly swimming with friends when he experienced some kind of distress.
Full story from the Reading Eagle
http://readingeagle.com/news/article/responders-dispatched-to-tilden-township-for-water-accident