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Todos necesitamos agua limpia, potable, y lo necesario para tratar adecuadamente el agua "usada". En otras palabras, agua y saneamiento. Basta ver ciertas situaciones en nuestra vida cotidiana para comprender la problemática global.
We all need clean, potable water, and the need things to properly treat water "used". In other words, water and sanitation. Just look at certain situations in our daily life to understand the global problem.