“Just imagine most are ending up in our water supply!”
This is not something to worry about at all! They show up because our testing has become so amazingly good. They show up as something like 0.001 parts per buzillian. You’d have to drink an olympic sized swimming pool full of water everyday to even get a small dose of these meds. The test results should be, and will be, continually monitored, but don’t worry about it.
Water sources such as groundwater are more likely to see these minute quantities show up in tests. Deep wells are highly unlikely to see the same results.
Don’t fall for that news hype about the pharms in the water! It was ginned up to increase news sales.