The first release of oil, which reached almost 11 million barrels before it was stopped, is still threatening Saudi desalting plants.
Israel is seeking bids for gas-powered desalting plants along the Mediterranean.
It will take about five years to build the pipeline for state water, but the desalting plant can be restarted on short notice.
The desalting plant is in ruins so there is no water.
The water, produced from a desalting plant, has a strong chlorine aftertaste.
If that happens, the options include more desalting plants, he said.
Huge desalting plants near the sea yield most of the nation's water.
On Sal and other islands, limited desalting plants are the sole source of drinking water.
Shelling has damaged the oil refinery and the desalting plant.
One water company in Kent, in the most afflicted eastern part of the country, is building a desalting plant, the country's first.
