They include antibiotics, anti-convulsants, mood stabilizers and sex hormones, as well as over-the-counter pain medicines.
The concentrations are tiny, measured in quantities of parts per billion or trillion. That's far below the levels of a medical dose.
But some scientists are worried about the long-term consequences to human health.
Researchers don't yet understand the exact risks from decades of exposure to combinations of low levels of pharmaceuticals. But recent studies have found alarming effects on human cells and wildlife.
In the course of a five-month inquiry, the AP discovered that drugs have been detected in the drinking water supplies of 24 major metropolitan areas -- from Southern California to Northern New Jersey, from Detroit to Louisville, Kentucky.
Three medications, including an antibiotic, were found in drinking water supplied to Tucson.
Utilities insist their water is safe.
Last Mod: 10 Mart 2008, 15:19