Since 1918. Northwest Dairy Commitment: Since 1918. Local family farms. No artificial growth hormones (Not found in regular milk. Does not contain the artificial growth hormone rbST). Simple ingredients. GHG neutral by 2050. Always delicious. North West Family Farms: No artificial growth hormones (Not found in regular milk. Does not contain the artificial growth hormone rbST). Ultra-pasteurized. Homogenized. According to the FDA, no significant difference has been shown between milk derived from rbST treated and non-rbST treated cows.