The water challenge

It is rainning almost every 2 days, but still the drinking water is more expensive than beer. They are serving every kind of beverage (coffee/tee/hot chocolate..) for free in the cantine or in the office floors, but not water. Finding the best taste was also a challenge, trying some unbelievably bad tasting brands, I decided one French brand "Volvic" to be the best for me. Something that makes the water challenge harder is that the boggest amount you can buy water is 1,5 liters. Which forces me to buy a 6 pack and return the bottles later on to the shop.