From their website:
Our family-owned and operated dairy has been in business in Southern California since 1927. For three generations, the DeGroot family, owners of Rockview Farms® and Good Heart® Organic Milk, have been making the freshest, most nutritious milk possible.
In fact, we are one of the last dairies in the state to own our own cows and process, package and distribute our own milk. That’s why we say Rockview milk is fresh from our farms to you.