Even the federal supplies could be overwhelmed in a pandemic.
Water supplies could be damaged and aquatic life would die".
She also suggested that China's Persian Gulf oil supplies could be threatened by a nuclear Iran.
Municipal employees were working on pylons so electricity supplies could be reconnected after months without it.
Some experts suggest supplies could be depleted by the middle of the century.
Trains could be stopped to prevent derailments, and gas supplies could be cut to avoid fires.
World supplies could be at a tipping point if turmoil spreads to more oil producers.
If we do not act, the security of our water supplies could be compromised..
Philadelphia's City Council has held hearings on whether public water supplies could be contaminated by gas drilling in Pennsylvania.
However, he noted, "groundwater supplies could be exhausted very soon, and its conservation is a strategic government priority".
By 1968 it had lost its seaports and become landlocked; supplies could be brought in only by air.
