#reverse-osmosis

#reverse-osmosis

ANTIOCH Knock knock! A new scam is making its way through neighborhoods, with individuals claiming Antioch's tap water is unsafe to drink as they attempt to sell water filtration systems, the city warned on Friday. Officials have refuted claims made by the individuals and assured residents that Antioch's water is safe for consumption and meets all federal and state requirements. The city issued a warning after a resident was approached by someone claiming to test the water quality.

The major obstacle to using the sea to meet human water needs which the UN puts at between 50 and 100 liters per person per day is that it contains too much salt to drink, and actually causes dehydration. Reverse osmosis, today's dominant desalination method, uses high-pressure membranes to filter out the salt, leaving behind drinkable water. But every liter produced this way generates an almost equal volume of brine.