Why is desalinated water more expensive than conventional supplies from ground and surface waters?
Ground and surface waters have little dissolved salts or solids and with minimal treatment can yield potable water safe for drinking. Seawater has a considerable amount of dissolved salts/solids, some 70 times the amounts considered safe for human consumption. It takes a large amount of energy and highly specialized corrosion proof equipment to liberate fresh water from saline waters.
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