A new study says the D.C. area's water supply could face considerable stress by 2040.
The Interstate Commission on the Potomac River Basin recommended in a report last week that the region's water suppliers continue to evaluate potential new water storage facilities such as reservoirs.
The report also recommends further development of a database and model of water withdrawal and uses to provide a sound foundation for planning.
The report says the existing water supplies serving more than 4 million residents are adequate to meet demand through 2035. But it says some reservoir resources may be exhausted by 2040.