According to analysis, there exist traces of 56 different drugs in Philadelphia tap water. Apparently there's penicillin in there too. Since I'm allergic, I guess I can't be guzzling too much anymore.
I'd like to look at this not as a problem but, like Westley in The Princess Bride, I will view this as an opportunity to make myself unfazed by a various number of pharmaceuticals. Good plan, no?
All in all, the amounts are measured in parts per billion and even trillion, so I'm not too worried. As long as the water doesn't come from the sink in the basement of my workplace (it stinks of sulphur), I'll drink to my heart's content!