Of course salesman will give you this kind of salespitch. He wants to sell, no? I would get a waterfiltering system only because of the poor quality of pipes.... So I buy bottled water. Now there was an article in the Arabic newspapers that said that Aqua, Rayyan and an other brand I forget the name of, were unsafe. However I have been using Aqua and Rayyan for many years and feel fine.
Aisha-Taweela