Before everyone goes drinking the kool-aid about SSRIs in tap water, you have to realize that the amounts found, at worst, in studies I’ve seen don’t go beyond 60 nanograms per gram — or 60 parts per billion .
For a frame of reference, regulations allow our drinking water to have up to 200ppb of cyanide, before it’s unfit to drink.
So this is stuff that the EPA keeps an eye on, but hasn’t even been seen to be even a remote concern in humans.