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