Whole Foods has been diligent in their efforts to secure a source for their organic milk that is of high integrity and comes from family farmers, not industrial-scale factory-farms where most of their competitors (Trader Joe's, Wal-Mart, Costco, among others) are procuring all or some of their "organic" milk. Whole Foods Market writes:

“Whole Foods Market is the world’s leading natural and organic foods supermarket and America’s first national certified organic grocer. The company’s line of 365 Organic Everyday Value organic milk is available in whole, fat free, 1 percent and 2 percent varieties.  The milk is produced and distributed regionally throughout the United States as close as possible to the communities in which it is sold.  It comes from a cooperative of organic family farmers dedicated to pasture-based dairy production and to preserving and expanding family farming as a way of life and a viable system of production. 

Whole Foods Market is highly selective about the products it sells, dedicated to strict product quality standards, and committed to supporting environmentally friendly agricultural and production methods.  All products are free of artificial flavors, colors, sweeteners, preservatives or hydrogenated fats. The company is proud to offer an extensive variety of organic milk and dairy products in addition to the wide array of organic offerings throughout its more than 185 stores in the U.S., Canada, and the United Kingdom.”