The sources

Agriculture Dominates Freshwater Use in the U.S

Gollehon, Noel · USDA Economic Research Service, Amber Waves · 1 November 2006

Read the original

The comparison point for the data-centre water figure: agriculture accounts for more than four-fifths of consumptive water use in the United States.

Cited in

Gollehon, Noel. ‘Agriculture Dominates Freshwater Use in the U.S.’ USDA Economic Research Service, Amber Waves, 1 November 2006.