The water used for irrigation is measured in acre-feet in the United States. An acre-foot of water covers an acre to a depth of exactly 1 ft. An acre is 4840 yd2. For supplying, an acre-foot is enough water of two typical households for 1 yr. Supposes the desalinated water costs about $1000 per acre-foot.
If it were the only source of water than how much would it cost one household per day?