Israel needs an investment of ILS200bn ($53.7bn) to cover the development of water installations over the next four decades.
The investment is in line with a water development plan approved by Israel's Water Authority Council.
The country will expand its water availability by focusing on desalination plants, which will be built on offshore man-made islands under the new plan, reports haaretz.com.
The Israeli Government aims to reach 750m3 of desalinated water within a decade or to double the current capacity.
Israel's require an additional 1.5 billion cubic metres of water and must double its desalination capacity by 2050.