Gonna need some evidence to back that up. Wouldn't the treatment get rid of the birth control?
From what I was reading, this seems to be an anti-BC talking point, but I couldn't find any evidence to suggest that any estrogens in tap water is caused by BC.
they pee and flush
this water gets processed and re injected back into the pipes
if you make the mistake to drink the tap water where they re purpose it from the canalisations, you just drink birth control water.