One nice thing about Singapore is that I can drink water straight from the tap. I have been to a few countries where I have to buy bottled water for my drinks as the tap water is not safe for consumption
But I am fussy. I bought a standing filter for my tap water. I simply fill up about 4-5 litres of water into a container and let gravity do its work. The water will flow down slowly through a few sets of filters clearing out the chlorine and other stuff. Water pipes are old in my housing estate and the ceramic filter turns slightly brown after 1-2 months of use and thats when I have to give the ceramic filter a good brushing.
I used the filtered water for my tea brewing. It is pretty good. At least....its a cheap option.
We can also buy bottled water and experiment the taste and aroma when using these bottled water. In Singapore, I can buy water which is bottled in Europe, Canada, USA and even Himalaya water. They cost about $1-4 for a large bottle.
Water makes up a large component in your tea and using such water may give a different taste or aroma in the tea. There are also some bottled water which I could not discern any difference when I used them for my tea.
Pix shows a bottle of water from Canada. When I used it on a raw puerh tea session, the tea seem to taste more smooth. Maybe it is my imagination. Fun though.