Answer :

SlowZasob
True, however 50% is rather optimistic value, it's probobally more. The main source of water is in the ground and the groundwater gets constantly more contaminated with road salt, oil, gasoline and other chemicals (and as you can see, these are all manmade products).

Answer:

True

Explanation:

There are millions of liters of water contaminated not only with polluted but arsenic, lead, and other toxic metals in the United States. It is dangerous for public health because it contains bacteria, viruses, and parasites capable of causing diseases in the people. As a preventive measure, Americans drink bottled water and not tap water.