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CBS Sunday Morning: The Navajo Water Lady

In this corner of the Navajo Nation, just 100 miles west of Albuquerque, N.M., an estimated 40 percent of residents don't have access to running water.

Their savior is Darlene Arviso, born and raised on the Reservation, who drives her precious cargo - a tanker truck filled with water - to make monthly deliveries to 250 families. Lee Cowan reports.

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