With the good weather finally here, we’ve been thinking of heading to the swimming pool.  And then we recalled the report earlier this year from the University of Alberta that detected a soft-drink sweetener in public pool water.  No – it was not just a spilled beverage.  Acesulfame K (ACE) passes unchanged into urine so finding ACE in public pools and hot tubs is a marker for how much peeing is going on.  A lot it turns out – they found ACE in all the pools and hot tubs they tested.  Not so sweet.
Or if you are thinking about heading to the river instead, there is ACE there too.  Not only does ACE pass though people, it passes through waste-water treatment plants.