The cost of building a desalination plants

For large-scale seawater reverse osmosis (SWRO) plants, capital costs can range from $1,000 to $2,500 per cubic meter of daily production capacity. This means a plant producing 100,000 cubic meters per day could cost between $100 million to $250 million for construction alone.

Specific examples include the Carlsbad Desalination Plant in California, which cost about $1 billion to build, with a capacity of 50 million gallons per day.

In a non related matter, in the last 5 years, the US has sent approximately $175 billion to Ukraine and $32.2 billion to Israel.