Another forum I belong to are discussing tthe saftey of drinking pool water in an emergency with all the chemicals in them. Since I use the BBB system, with a cya of 40, I was curious. Does anyone know how safe it would be to drink in an emergency situation? After boiling of course! My chemistry is out of date, but I would think fairly safe, except for the CYA, have no clue what it even is. Thanks for any thoughts you may have on this. Gladys