Out there, there must be a little LSD too
I do not know. Here is an article excerpt:
“Ever since the late 1990s, the science community has recognized that pharmaceuticals, especially oral contraceptives, are found in sewage water and are potentially contaminating drinking water,” Janssen tells WebMD.
Concern among scientists increased when fish in the Potomac River and elsewhere were found to have both male and female characteristics when exposed to estrogen-like substances, she says. For instance, some fish had both testes and an ovary, she says.
From: https://www.webmd.com/a-to-z-guides/features/drugs-in-our-drinking-water#1
Scientists starting looking at the effects of oral contraceptives first, she says. “Now analyses have expanded to look at other drugs,” Janssen says.
Technology has made this research easier, says Suzanne Rudzinski, deputy director for science and technology in the Office of Water at the U.S. Environmental Protection Agency. “Analytical methods have gotten better and we are able to detect lower levels than ever before.”