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In Las Vegas,
water used indoors travels a continuous loop. From
homes, water flows to a treatment plant, which sends
it back to Lake Mead. Then an equivalent amount is
pumped from the lake, and the 12-mile journey to
treatment plants and Southern Nevada’s taps begins
again. The Southern Nevada Water Authority wants that
system preserved because it allows Las Vegas to
consume more than its annual 300,000-acre-foot
allotment from the Colorado River. Water returned to
the lake converts to credits that the Water Authority
can use to pump more water from the lake.
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