New research from the Interstate Commission on the Potomac River Basin shows the region’s water supply could fail to meet the area’s needs by 2030, in the event of an extreme drought.

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Changing weather patterns and increased water would strain the Potomac River, which serves as the primary — and, in some cases, sole — water supply for water companies in D.C., Virginia and Maryland.

The report by ICPRB shows the region will have enough water in most years, but there is an increasing chance — up t

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