Trek said..
Treks tap water always tasted a bit fibreglassey. I surmised that wouldn't be curable so Ive been intending for the last 5 years to put in a good reverse osmosis water filter so we can drink it. Meantime we use that water for washing up and the shower and take 15L filtered drinking water containers with us. The Aldi ones have a tap that unscrews so you can refill them. Scotch tastes much better with filtered water.
This. We carry drinking water separate, the tanks are used for washing.
i flushed the tanks 4 times from brand new , still have that fibreglass taste. A reverse osmosis filter would be an interesting idea to try.