Answer:
Underground
Explanation:
The majority of the liquid freshwater reserves are found underground, or rather the groundwater. The groundwater accounts for only 12% of the total freshwater reserves on the planet, but it is still the largest reservoir of it in liquid form. The reason for this is that the lakes and rivers only have around 1% of the total freshwater reserves, thus significantly less, not to mention that large portion of them are polluted nowadays. The biggest problem is that the majority of the freshwater is not actually in liquid form, but instead it is in the form of ice, trapped around the poles and on the highest mountains in the form of glaciers and polar caps. That water accounts for 87% of the total freshwater reserves. The groundwater, despite being a relatively rich source of liquid freshwater, also faces lot of problems, as the human population constantly needs more and more of it, usually taking more then what the nature can replace, living them dry eventually.
