Is anyone knowledgeable about filling a swimming pool in Thailand. One builder has said just to fill it from the underground water we use for the house by the hose and not to buy river water. (about 1.5 days he says) and another builder says to buy water but not to get from underground. I am concerned about calcium levels but even more concerned about the cost of the water in Pattaya. It is going to be salt anyway but that shouldn't affect anything.