so,, back to peeing out the excess,, what happens at the treatment plant ? things like vitamins,, and other pills that have been once thru the "person" so to speak,, and also some pills that just get flushed to get rid of them.
There is also radiation treatments that pass thru the body, and into the urine. not a big deal at your home,, from one little pill. But at the ontario "clean water" agency pools,, there is a cocktail of vitamins, nutrients, chemicals, hormones, radiation... oh, i never said that.... anyway, some of that stuff ends up in the water supply ... and people downstream irrigate crops with it. Now your food has value added stuff!
Someone did a study some years back in a major city (NY?) showing that there's a recordable level of birth control hormones and prozac in the water supply. Urban myth? It might explain all the metrosexuals.