Mains water is chlorinated and is fine for brushing teeth. However, bottled water is advised for drinking, especially outside Tirana. Brucellosis and tuberculosis are present in Albanian dairy cattle. Unpasteurised milk and homemade cheese should be avoided; however, in cafes and restaurants the milk is always UHT, and therefore safe.
Usually leave a tip if the service was pleasant and quality. The standard amount is 10 % above the receipt of the invoice. But do not forget that the staff make very little money, and their main income - tip.
Water resources of Albania are abundant, almost in all the regions of the country, with an uneven seasonal distribution. The available quantity of surface water, and to a less extent of groundwater also, strongly decreases during the months of summer. Thus, only about 6-9 % of the annual runoff is observed during the dry season (July-September).