Sort of controversial topic. But even wine will not kill all bacteria. I myself never gave it much thought. And really like say Martinella cold press cider. There is also a movement towards Al Naturale products. But just breezing through various sources; this seems slightly risky to both producers and consumers.
The technology centers around age old heat treatment, And now days UV systems. UV does great not cooking flavor elements sought. But it too does not kill all bacteria. UV however wipes out Vitamin C.
Then there are many filtering technologies. {Possibly eliminating some bacteria} and also additives for clarification.
Personally I am fine with cloudiness, solids and fruit particles.