This topic is raised every couple of years. I paddled a while ago with a couple who claimed the water in the bags made them physically nauseous until they installed a fancy water filtration system in their house. They swear it is the chlorine in the tap water that reacts with the lining of the dromedary bags and that the new water, with the chlorine filtered out, remained sweet tasting and did not affect them adversely. Knowing your analytical approach, I would like to see if you can fit this into your experiment. Keep up the good work!!