l etoile

My son T-wiz is doing an on-going science project where he's testing the tank water on airplanes for colliform colonies. (I think he's going to start a thread on his results sometime soon.) He just tested six different flights (not all UA) and four of six came back positive for colliform.

I believe most water actually served on airplanes comes from bottles, but on UA's 747s, for instance there are mini cups in the lavs, which would imply the water's safe to drink.

There is also the water dispenser outside the galley. Do you know if this water comes from the airplane's tank? Also the ice served on board, does any of that come from the airplane's tank?

Thanks