Big Think: According to the CDC, 50 countries worldwide have drinkable tap water. But look closer, and the picture is more nuanced…So, which 50 countries are in the CDC’s clean tap water club? There’s most of Europe, excluding most of the Balkans, as well as most of the former Soviet states. Notable exceptions in the two latter categories are Croatia and Estonia, respectively, where the tap water is drinkable. In the Americas, just four countries qualify for quality tap water: Canada, the U.S., Costa Rica, and Chile. All of Asia has just seven countries with clean tap water: Israel, Saudi Arabia, Kuwait, the UAE, Singapore, South Korea, and Japan. Australia and New Zealand round out the club. That leaves out all of Africa, most of Latin America, and the world’s two most populous countries, India and China…”