I've been living in Qatar since beginning of 2009.
Initially we took bottled water from Nestle.
After few queries, after 2 years we decided to stop paying for bottled water, since we realized that tap water was good enough.
Eventually in 2016 we decided to install a filter system (below the sink), a reverse osmosis system.
I do believe we have some level of protection regarding solids in suspension and minerals. In the other hand, we installed (only for my wife) a shower with a filter system for washing hair, and my wife is positively saying that it has made a diference.
My wife says Tea tastes much better, I do believe the