What I am saying is that if that is getting through the system there are probably a lot of other things in there that you don't even know exist. A better system would not only deal with this bead issue which is irrelevant to me. But it would also deal with a wide variety of other contaminants that you don't even know are in there.
Consider further we're looking increasingly to closed loop sewage treatment facilities that output water INTO your tap directly from the sewage treatment facility. They're already strongly considering that in California.
My point is that the stupid beads don't matter and what this really indicates is that the water treatment systems needs to be upgraded.
There are a lot of things that we DO know about. Prescription drugs for the most part are not filtered out in sewage treatment plants.
Some like birth control pills are actually in high enough doses that they are starting to affect the wildlife. I agree that the sewage
treatment plants need to be upgraded and a closed loop via distilation or reverse osmosis would be expensive but might be the best
way to make sure 100% of the bad stuff doesn't make it out.