New studies show that water bottle in your emergency kits may not be safe to drink from.
You may want to check out this news story published on Yahoo News this morning to determine if the bottle you are using is safe.
Now with both plastic and aluminum made bottles raising questions, your safest bet is a stainless steel bottle. Even sippy cups come in stainless steel and are relatively inexpensive. Check out Klean Kanteen for a variety of safe products for both adults and children. I aslo found this a safe children's bottles.