Hiya,
We took a "Bobble" water bottle with us this time around. it had a filter simmilar to the jug filters. We would take the empty bottles from our drinks the previous day and fill with "filtered" water and noticed a HUGE improvement on taste.
However NOTHING helped to give me a good cuppa. I left my travel kettle at home this time around, but regretted that. Took my own twinnings teabags, tried their tea, tried different milks, tried different cups, NOTHING helped. Now I am back in the UK and am having rouble making a great cuppa here too. Mybe I hav lost the ability to make good tea!