Locals appreciate very much the many water fountains that can be found (or stay hidden) around the city. Lugano tap water is TOP. You can never stop drinking on a Summer day from one of those. This is of course a treat. Carry your water bottle in Lugano and surroundings; stop buy those plastic stuff preserving our environment. Enjoy!
Travellers must see those fountains, some of them are outside the city center and are beautiful.
Carry a water bottle, rent a bike, drink!