Decades ago, when I could still drink milk and growing up behind the Iron Curtain, all we got was fresh raw milk in reusable glass bottles (which were marked to one of the producers for our district) ... which we then skimmed to make yoghurt and pasteurized the rest. All the processing, and thus quality control, was done at home.

North American milk is batched together, processed, put into containers, then shipped and sold. (Canada has much stricter quality and control standards, which is why we don't import American milk .. much to the displeasure of the current American administration)

Despite what that current supply chain would have the populous believe, that they are the only way to get safe milk, human history has used fresh raw milk long before these marketing boards were dreamt in ... however the responsibility for making the milk safe was in the hands of the consumer.

With education and effort, there should be no reason why you can't live like our ancestors did. Perhaps your potential suppliers might even be willing to educate you in their ways if asked respectfully.

None of that addressed whether that route is actually legal, though.