We found a national research station, where they have like 300 cows and sell the surplus milk to companies and between their doors like three times a week. The info that you have to boil it is everywhere, we never did it. Since it's a research, the cows might get extra vaccination or such, but we found out they are actually researching what is the minimum, but still acceptable amount of medication. This place has basically no advertising - I had to jump through hoops online to be sure they actually still exist - it behaves the same like in 1980's, but the milk is amazing and very cheap. Try not farmers, but national/animal research too.