Yes, today is the day that The Secret Lagoon is launched.

Of course, I set out to make something beautiful and wondrous, so I find it MOST hilarious that, having read some of the wonderful comments left by you already (many hugs), it seems many are assuming this water is POISONOUS!  And why?  Because I made it, that's why!

If anyone else had built this, it would be mystical and magical.  Cyclonesue builds it, and it's: "Is that sulphonic acid or something MORE deadly like cyanide?"  Oh, faithless beings that you are!  It might or it might not be.  There are stories, rumours perhaps, that three souls were lost in this mysterious lake. 

That was long ago (if it happened) and the Tourism Board stepped in crossly to make it safe again (or something like that).  Put it this way, many Sims have swum safely ever since.  After effects?  None have been witnessed (not in the 2-3 minutes of exiting the lake at least...).  A lot of fuss about nothing, therefore.