If consuming the cleanest and most natural dairy is important to you (and it should be!) choose whey protein powder from New Zealand. The dairy industry in the little country down under is subject to some of the most stringent, advanced and humane farming practices. Unlike in North America and most other countries in the world, the Kiwi government mandates free-range grass feeding and that all dairy products be chemical, growth hormone and antibiotic free. The result is likely the cleanest dairy and whey protein in the world. Various companies sell New Zealand whey, so look out for it on your next tub.