I think it's to do with marketing the product. Clarity, transparency, reflects (pun intended) the required purity of the water, allows us to assure ourselves that the water is clean. read more
I'm pretty sure an opaque plastic would be cheaper, it takes more work to achieve transparency than opacity in plastic, but that would leave the consumer wondering if the water really was water. Interestingly we will buy milk in opaque containers and we rely upon the packaging to assure us it is pure. read more
Well you are not alone. There has been a lot in the news recently about the safety of water bottles. read more
In an analysis of 450 BPA-free plastic containers — including baby bottles, sippy cups and water bottles — Bittner and his colleagues found: “Almost all commercially available plastic products we sampled, independent of the type of resin, product, or retail source, leached chemicals having reliably-detectable estrogenic activity, including those advertised as BPA-free. read more