We use the water that comes into the van, via the aquaroll, for showering and washing up only. We bought one of those 2lt jugs with a lid, which you usually see with supermarket picnic items and we fill it with fresh water from the site tap for filling the kettle to make hot drinks and filling the flasks to take with us when we go out birdwatching or walking for the day. We don't find doing that a hassle. For cold drinks, we use bottled water.
When you think, the aquaroll sits outside in the sun and heat all day and quite often gets topped up with fresh water from a separate container, plus the caps that go on the top rarely fit properly, it's really not a good idea to drink the water coming from it.
Only problem at some sites and CL's the water tastes strongly of chlorine, which you can taste in your tea. When it's like that, we use bottled water to fill the kettle, but it doesn't happen that often.