It's not just the water, I couldn't walk 10 minute without seeing a closed gas station or an unfinished building. Except for the most tourist friendly parts of Barcelona, I constantly had a mad max feeling. Lot of immigrants too. And that's catalunya, the obviously superior part of the country. Still didn't looked that hygienic. On: you can drink tap water in slovenia, slovakia, hungary, serbia, czech republic, etc. Some exceptions apply, mainly in the rural areas, next to lakes, etc.