I'm generally pretty careful about avoiding ice and tap water when traveling to countries like China.

Couple of things I've had questions about and never really seen a definitive answer.

1. In cities like Beijing that have McDonalds and KFC, the soft drinks are from a fountain like in the US. Is that untreated tap water being used for both the soft drink and the ice? Are they as safe to drink as bottled water or should they be avoided just like tap water? Also, what about things like raw lettuce and other unpeeled veggies on sandwiches?

2. I've also wondered about airline catering originating from developing countries. Are raw salads and unpeeled veggies and ice safe to consume or are they to be avoided the same way one would avoid them while visiting? Last time I was in Beijing even the water at the airport was not potable and I got to wondering about catering.