"Capt. Rob" wrote in message

Thanks for making my point, Bob. BEACHES have levels due to ground
contamination retention. This is not found in deeper water where we
swim. These waters are exchanged daily.

That is a totally false and misleading statement Robert. The contamination
will be "sealed" with depth and reduction of surge while it will be exposed
and renewed at the water's edge due to turbulence and replenishing from the
sedimentation occurring at depth which is subject to current and tidal
action. In other words... the sediment from the deeper portions feeds the
pollution at the beach.

It is _not_ safe to swim in contaminated water. Think of it as a very large
sewage lagoon.

CM