My family is from Israel, we recently visited Athens. We have excellent tap water in Israel, and we only drink water at home. No soft drinks and very little juices.

The tap was in Athens was, for us, extremely good tasting. We found ourselves constantly drinking the water, it was actually a treat to drink. We found it far better than either our own tap water, or the bottled water (Ein Gedi) that we bring with us when camping.