$2100 per A/F
May 15, 2017
Taking salt out of seawater, or desalination, costs a minimum of $2,100 per acre foot. This is the cost as of Oct. 2016 for a very large plant producing water in bulk at the best price. Today, 151,000 acre feet of fresh water became salt water. The cost to turn around and now remove the salt from today's outflow is $317,100,000 (three hundred seventeen million, one hundred thousand). Only in California would high quality drinking water be allowed to flow to the sea, and then expensive desal be proposed to remove the salt. An acre foot is enough water for about six people for a year.