Originally Posted by
WorldLux
Depends on the locality. Plenty of communities have high levels of lead in their water supply. Courtesy to pipes containing lead ...
My son is doing a year abroad (in Marion, OH) and needs to buy bottled water due to the local water being brown.
Looking at this map really makes me wonder about American water:
Current Drinking Water Advisories for Ohio
As a country, my guess is Japan near the very top. Plenty of rain and excellent infrastructure.