North Carolina is not one of the 15 states where pharmaceuticals have been found in the drinking water.

An Associated Press investigation has found a vast array of drugs in the water supplies of at least 41 million Americans.

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 scientists are worried about the long-term consequences to human health.

The Associated Press reports it discovered the drugs in the course of a five-month inquiry.

Here are the states listed in the AP report: Oregon, California, Nevada, Arizona, Georgia, Kentucky, Colorado, Texas, Louisiana, New Jersey, Minnesota, Wisconsin, Michigan, Indiana, Ohio and Pennsylvania.