The water in my country is fantastic. That being said we have to buy all bottled (in plastic) water for my Mother for the past ten years or so. Why? She had man

The water in my country is fantastic. That being said we have to buy all bottled (in plastic) water for my Mother for the past ten years or so. Why? She had many cancers over the years and it was dcotor's advice to avoid tapwater due to the possibility of pipes introducing germs etc which her immune system could not handle.