Curious Questions Queries and Quandries

Welcome to the newest re-occurring segment of brain goo. This segment will follow in the footsteps of random contests and quotations of the day. Keep in mind that this is an audience-participation piece, so please, do comment and enjoy.
So, what is it?
This is a place where the oddest of questions, the most obscure queries, and the most random of quandries are posed. they will reach beyond basic trivia into the world of the scientific and beyond to the theological.
Today's inquiry involves DNA.
Do the chemicals added to chlorinated pools alter the DNA structure of the biological residue left by the swimmers? I.E: Would you be able to swab a pool and come out with viable DNA samples?

I wonder about these things ...

Let me know what you think... Anything will do!

**Over and Out**
~V