I buy raw (unpasteurised) milk from a farm near me. I used to buy it from a farm on the other side of town when in the UK. Funny thing was the farm was quite near to a waste incinerator. The flue stack was tall enough that on a very bad day it was the residents of Sale and Northenden who received a little of what you don't want.As an aside, there is a farm in the Peaks which has a cafe and farm shop attached, and they make lovely coffee with their own raw milk.
It received funding from the EU to develop. I know this due to there being a sign in the corridor near the bogs.
The soil on the farm had background level dioxins as you would find anywhere in a heavily populated country, soil association was very happy as the farmer, a Mr John Clair spares his land the pesticides and heavy duty fertilisers. Wall End farm at the head of Langdale valley was the only other place I knew of that sold untreated milk from source.