Ann Arbor, MI, Apr 21, 2009 — Clean water rules dating back to the 1970s have made dramatic differences in the health of US waterways. But there's increasing recognition of a new threat - one that's traced back not to big industrial plants, but to household drains. The drugs we take are showing up in our drinking water, and they're showing up in fish. The federal government's now saying that in most cases, you should never flush unused drugs down the drain. There are safer ways to dispose of them. But even if you want to do the right thing, it's not always easy. Rebecca Williams takes a look at what you should and should not do with your medications.