Washington Post -- The Washington area’s drinking water contains trace amounts of six commonly used drugs that typically turn up in wastewater and cannot be filtered out by most treatment systems. The pharmaceuticals -- an anti-seizure medication, two anti-inflammatory drugs, two kinds of antibiotics and a common disinfectant -- were found in very small concentrations in the water supply that serves more than 1 million people in the District, Arlington County, Falls Church and parts of Fairfax County. But scientists say the health effects of long-term exposure to such drugs are not known.
